DREAM THEATER OVERTURE 1928 METROPOLIS pt 2 Here's the tab to the Overture. I've added a new element, that ASCII tabs have always (almost) lacked - rhythm indication. In case of the slow or rhythm guitar parts the timing could be easily guessed just by listening to the recording, when it came to playing some fast and tricky runs the tabs were practically useless (uless you had a steady rhythm, say 16th notes). You just knew to play a series of notes, 'fast'. If you want to practice with a slower tempo, say with a metronome, you have no idea of how the notes are spaced within a measure. You have to analyze the recording, which means that you have to do the transcription again, yourself. Besides that, I think it helps a lot to be aware of the actual rhythm. So the result is below, the tab is a little more crowded, but you now get the whole picture. (at least the part I managed to make out :) The rhythm indications are fairly straightforward, an explanation is at the end of this file, along with the tab explanation. Enjoy, and tell me what you think! As an overture, this song has a lot of parts from other songs on the album, I indicated those connections which I noticed. Tempo is around 112 BPM. Bridge pickup, distortion. D5 __3____ __3__ __3____ __3____ 4 |-|-| | |-|-| |-|-| | |-|-| | fade in 4 | | | | | | | | | | | | | | | E|-------------------------------------------------|--------------------- B|-------------------------------------------------|--------------------- G|-------------------------------------------------|--------------------- D|-0-0-0-0-----------0-0-0-0-0-0-0-----0-0-0-0-----|--------------------- A|-------------------------------------------------|--------------------- E|-------------------------------------------------|--------------------- PM - - - - - - - - - - - - - - - - - - - -/ D5- more or less __3____ __3__ __3____ __3____ __3____ |-|-| | |-|-| |-|-| | |-|-| | 2 |-|-| | | | | | | | | | | | | | | | | 4 | | | | E|-------------------------------------------------|---------------------| B|-------------------------------------------------|---------------------| G|-------------------------------------------------|---------------------| D|-------------------------------------------------|---------------------| A|-5-5-5-5-----------5-5-5-5-5-5-5-----5-5-5-5-----|---5-5-5-5-----------| E|-5-5-5-5-----------5-5-5-5-5-5-5-----5-5-5-5-----|---4-4-4-4-----------| B| 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 This is probably a seven-string guitar Next comes the intro riff, D Lydian scale. D ___ ___ _______ ___ ___ _______ | |-| | |-| | |-| | |-| | |-| | |-| | | | | | | | | | | | | | | | | | | E|-----------------------------|---------------------5-------|----------- B|-7---------7---------7-------|-7---------7---------7-------|----------- G|-7---------7---------7-------|-7---------7---------7-------|----------- D|-------0-0-------0-0-----0-0-|-------0-0-------0-0-----0-0-|----------- A|-----------------------------|-----------------------------|----------- E|-----------------------------|-----------------------------|----------- PM-/ PM-/ PM-/ sim. E7/D D ___ ___ ______ ___ ___ ______ ___ ___ _____ | |-| | |-| | |-| | |-| | |-| | |-| | |-| | |-| | |-| | | | | | | | | | | | | | | | | | | | | | | | | | | | E|-4-------4-------4------|-4-------4-------4------|---------------------| B|-3-------3-------3------|-3-------3-------3------|-7------7------7-----| G|-4-------4-------4------|-4-------4-------4------|-7------7------7-----| D|-----0-0-----0-0----0-0-|-----0-0-----0-0----0-0-|----0-0----0-0---0-0-| A|------------------------|------------------------|---------------------| E|------------------------|------------------------|---------------------| sim. E7/D similar rhythm E|---------------------5------|-4---------4---------4------|------------- B|-7---------7---------7------|-3---------3---------3------|------------- G|-7---------7---------7------|-4---------4---------4------|------------- D|-------0-0-------0-0----0-0-|-------0-0-------0-0----0-0-|------------- A|----------------------------|----------------------------|------------- E|----------------------------|----------------------------|------------- sextuplets throughout E|-4-5-4-2-----------------------------------------|---------------------- B|---------5-3-2-5-3-2-----------------------------|---------------------- G|---------------------4-2-1-4-2-1-----------------|---------------------- D|---------------------------------4-2-0-4-2-0-----|---------------------- A|---------------------------------------------4-2-|---------------------- E|-------------------------------------------------|---------------------- PM - - - - - - - - - - / Some arpeggiated chords, let ring throughout. (Still distorted) The tonality is more or less A Dorian. This guitar part appears later in One Last Time and Strange Deja Vu This section is later referred to as Rhy Fig. 1 A2 B5 _____ _____ _____ _____ | | |\ | |\ | | | | |\ | |\ | | | | | | | | | | | | | | | | E|---------------------------------|---------------------------------|---- B|-------------0---------------0---|-------------0---------------0---|---- G|---------2-----------2-----------|---------4-----------4-----------|---- D|-----2-------------------2-------|-----4-------------------4-------|---- A|-0-------------------------------|-2-------------------------------|---- E|---------------------------------|---------------------------------|---- A2 F#11 _____ _____ _____ | | |\ | | |\ | | |\ | |\ | | | | | | | | | | | | | | | E|---------------------------------|---------------------------------|---- B|-------------0-------------------|-------------0-------------------|---- G|---------2-----------------------|---------------------3-----------|---- D|-----2---------------------------|---------4---------------4-------|---- A|-0-------------------------------|-----4-----------------------4---|---- E|---------------------0-------0---|-2-------------------------------|---- A2 B5 sim. E|---------------------------------|---------------------------------|---- B|-------------0---------------0---|-------------0---------------0---|---- G|---------2-----------2-----------|---------4-----------4-----------|---- D|-----2-------------------2-------|-----4-------------------4-------|---- A|-0-------------------------------|-2-------------------------------|---- E|---------------------------------|---------------------------------|---- C2 D(4) _____ _____ | | |\ | | |\ | | |\ | | | | | | | | | | | |. | E|-------------3-------------------|---------------------------------|---- B|---------------------3-----------|-------------8-----------7-------|---- G|---------5-------------------5---|---------7-----------------------|---- D|-----5---------------------------|-----7---------------------------|---- A|-3-------------------------------|-5-------------------------------|---- E|---------------------------------|---------------------------------|---- The next riff is mostly E whole-tone scale. _______ ____ _____ _______ ____ ______ _______ ____ __3____ 3 |-|-|-| | | |-| | |-|-|-| | | | |-| |-|-|-| | | |-|-| | 4 | | | |^| | | | | | | | |^| | | | | | | | |^| | | | | | E|----------------------|----------------------|-------------------------| B|----------------------|----------------------|-------------------------| G|----------------------|----------------------|-------------------------| D|----------------------|----------------------|-------------------------| A|--------~~~~----------|-5-4----~~~-----------|--------~~~--------------| E|-0-2-4-6----0--0-0-0--|-----2-4----0--0--0-0-|-0-2-4-6----0---0-0-0-0--| PM - - / PM - - -/ PM - - - -/ _______ _______ _____6_____ _______ _______ _______ |-|-|-| | | |-|-|-|-|-| |-|-|-| | | |-|-|-| | | | |^| | | | | | | | | | | |^| | | | | | E|-------------------------------|---------------------------|------------ B|-------------------------------|---------------------------|------------ G|--------~~~--------------------|---------------------------|------------ D|-----4-6-----------------------|---------------------------|------------ A|-5-7---------------------3-5-7-|---------~~~---------------|------------ E|---------------0---2-4-6-------|-0-2-4-6-------0---0-0-0-0-|------------ PM - - - - - -/ PM - - - -/ _______ _______ _______ _______ _______ __3____ |-|-|-| | | | |-| |-|-|-| | | |-|-| | | | | |^| | | | | | | | |^| | | | | | E|---------------------------|-----------------------------|-------------- B|---------------------------|-----------------------------|-------------- G|---------------------------|-----------------------------|-------------- D|---------------------------|-----------------------------|-------------- A|-5-4-----~~~---------------|-----------------------------|-------------- E|-----2-4-------0---0---0-0-|-0-2-4-6-------0---0-0-0-0---|-------------- PM - - - -/ PM - - - -/ _______ _______ _______ ______3__ ___ __3____ __3__ __3____ __3____ 5 |-|-|-| |-|-|-| - | -| | |-|-| - | 4 |-|-| | |-|-| |-|-| | |-|-| | 4 | | | | | | | | | | | | | | | | |.4 | | | | | | | | | | | | | | | E|---------------------------------------|---------------------------------| B|---------------------------------------|---------------------------------| G|---------------------------------------|---------------------------------| D|-----4-6-----------------------------3-|-2-2-2-2--2-2-2-2-2-2-2--2-2-2-2-| A|-5-7-----7-5-----7-----5-----3-1-----3-|-2-2-2-2--2-2-2-2-2-2-2--2-2-2-2-| E|-------------6-4---6-----4-------2-1-1-|-0-0-0-0--0-0-0-0-0-0-0--0-0-0-0-| PM - - - - - - / PM - -/ PM - - - - - - - - - - - - - / Now, the keyboard solo. The guitar plays the intro riff (slightly modified here and there) : D E|-----------------------------|---------------------5-------|----------- B|-7---------7---------7-------|-7---------7---------7-------|----------- G|-7---------7---------7-------|-7---------7---------7-------|----------- D|-------0-0-------0-0-----0-0-|-------0-0-------0-0-----0-0-|----------- A|-----------------------------|-----------------------------|----------- E|-----------------------------|-----------------------------|----------- PM-/ PM-/ PM-/ sim. ___ ___ ______ E7/D | |-| | |-| | |-| D | | | | | | | | | E|-4-------4-------4------|-4-------4---4-5-7--4-5-|---------------------| B|-3-------3-------3------|-3-------3--------------|-7------7------7-----| G|-4-------4-------4------|-4-------4--------------|-7------7------7-----| D|-----0-0-----0-0----0-0-|-----0-0----------------|----0-0----0-0---0-0-| A|------------------------|------------------------|---------------------| E|------------------------|------------------------|---------------------| sim. ___F#5 G5 E5 E7/D | |-| |\ |\ |\\ |. | | |. |. | E|-----------------5------|-4-------4-------4------|-4------------------| B|-7-------7-------7------|-3-------3-------3------|-3------------------| G|-7-------7-------7------|-4-------4-------4------|-4------------------| D|-----0-0-----0-0----0-0-|-----0-0-----0-0----0-0-|------------4--5--2-| A|------------------------|------------------------|------------4--5--2-| E|------------------------|------------------------|--------0-0-2--3--0-| PM-/ At this point another distorted guitar enters playing a familiar melody, the rhythm guitar just plays the power chords indicated.(B minor tonality) The melody and chord progression are of course reminiscent of Metropolis pt. 1 and appear later in Home. B5 G5 E5 ~~~~~ . . 1/2 ~~~~~ E|-------------------|-----------------------|--------------------------|- B|-------------------|-----------------------|--------------7-8--10--8--|- G|------------/11-11-|-11b------r--7--9-/11--|-9------\--/9-------------|- D|-9--------\--------|-----------------------|--------------------------|- A|-------------------|-----------------------|--------------------------|- E|-------------------|-----------------------|--------------------------|- D5 A5 B5 G5 H P ~~~ ~~~ 1/2 ~~~ E|-------------------|----------------------------|----------------------| B|-7---8---7-^8^7----|----------------------------|----------------------| G|----------------9--|--------------6-9-7--9--11--|-11b-r--9------9--11--| D|-------------------|-9-----(9)\(7)--------------|-----------12---------| A|-------------------|----------------------------|----------------------| E|-------------------|----------------------------|----------------------| E5 D5 A5 _______ /----- 3 _______-\ A.H. _______6________ | |-|-|-| | | | |-| | | | |--|--|--|--|--| | ^| | | | | | | | | | | | ~~~ | | | | | | E|----------------------------------|------------------------------------| B|---~~~--------------10------------|------------------------------14-17-| G|-12--------9-11-12------12-^14^12-|-11--/14--14------------15-16-------| D|---------9------------------------|------------------14-16-------------| A|----------------------------------|------------------------------------| E|----------------------------------|------------------------------------| PM-/ change to neck pickup The sextuplet run leads into a mixolydian solo in F#. A similar melody returns in One Last Time (2:03), with some wild modifications, though. F# _____ ____ _________ _____________ _____________ | | |\ | |\ | | 3 | |--| |---|=|-|---| |---|---|---| | 1 | | | | | | 4 ^| | | | H |P| | | | | | | E|--------------------------|-------------14-^18^14----------------------| B|-17b-r--------------16-17-|(17)--14-17-----------17--14----------------| G|----------15--------------|------------------------------16--15--------| D|-------16--------16-------|--------------------------------------16-14-| A|--------------------------|--------------------------------------------| E|--------------------------|--------------------------------------------| _____ A.H. ______ _____ _____ ____ _______3__ 4 | | |\ | |\ |--| | | | | | | | | |-|-| 4 | 1 | | |~~~~ | | | | ^| | | | | | | | | | E|-------------------------------|-----------------------------------|---- B|-17b-r-------------------------|---------------------------------14|---- G|----------15-------------------|-----/15\(13)-11-13\(11)-9-----15--|---- D|-------16--------16------------|-----------------------------14----|---- A|---------------------13/14-13--|(13)-/13\(11)-9--11\(9)--7---------|---- E|-------------------------------|-----------------------------------|---- _____ A.H. _____ _________ ____________ __________ 4 | | |\ | |\ | | 3 | |--| |---|=|-|--| |--|--|--| 4 | 1 | | |~~~~ | | | 4^| | | | H |P| | | | | | | E|-----------------------------|------------18-^21^18------------------|-- B|-17b-r---------------16--17--|(17)--17-19----------19-17-19-------17-|-- G|----------15-----------------|------------------------------18\15----|-- D|-------16--------16----------|---------------------------------------|-- A|-----------------------------|---------------------------------------|-- E|-----------------------------|---------------------------------------|-- ______________ _____________ _____________ _____________ 4 |---|=|--|---| |---|---|---| |---|---|---| |---|---|---| 4 | | | | | | | | | | | | | | | | | E|------------------------------------------14----------------------|------ B|-16--17-16-14-----------------------------------------------------|------ G|--------------17--16--15--14--15--16--17------17--16--15--14------|------ D|--------------------------------------------------------------16--|------ A|------------------------------------------------------------------|------ E|------------------------------------------------------------------|------ _______6________ _______6________ ___3_______________ |--|--|--|--|--| |--|--|--|--|--| |--|--| |==|==|==| | | | | | | | | | | | | | | | | | | | | 1 ^| E|----------------------------------------------14-16-17/19b--------|(b19) B|----------14-------------------------14-16-17---------------------|----- G|----------------------------14-16-17------------------------------|----- D|-14-15-16----16-15-14-16-17---------------------------------------|----- A|------------------------------------------------------------------|----- E|------------------------------------------------------------------|----- Rhy Fig. 1 is repeated here, doubled with an acoustic guitar. After that, the lead guitar returns with another melody (bridge pickup again). The rhythm guitar plays again the power chords indicated. The chord progression used here is the main progression in One Last Time and also appears in Finally Free. (key of C# minor) C#5 B5 G#5 A5 ~~~~ ~~~~ ~~~~ ~~~ ~~~ E|-----------------|-----------------|----------------|-----------------|- B|\4-----5-----7---|-4---------------|----------------|-----------------|- G|-----------------|-------4---------|-4^6^4-----6--6b|b6-r-(6)\----6-8-|- D|-----------------|---------------6-|----------------|----------/6-----|- A|-----------------|-----------------|----------------|-----------------|- E|-----------------|-----------------|----------------|-----------------|- __3__ C#5 B5 G#5 A5 |-|-| ~~~~~~. ~~~ | | | E|-----------------|-----------9---11|-11b-----r-9---|-----------------11| B|-------7-(7)/9-12|-12--------------|-------------9-|-12b-----------12--| G|-9---------------|-----------------|---------------|-------------11----| D|-----------------|-----------------|---------------|-------------------| A|-----------------|-----------------|---------------|-------------------| E|-----------------|-----------------|---------------|-------------------| B5 15 sixteenth notes throughout 16 1 E|-14b-r-11-------------------------------------------|------------------- B|----------12----12-------12--------12---------------|------------------- G|-------------11----11\9------9--8---------11--9--8--|------------------- D|---------------------------------------9------------|------------------- A|----------------------------------------------------|------------------- E|----------------------------------------------------|------------------- Here the sixteent run modulates to C Major, the rhythm guitar strikes single chords, I placed the chord symbols directly above the corresponding melody notes. C5 D5 A5 B5 ________ _______ ________ _________ _________ __________ 3 |-|--|-| |-|-|-| |-|--|-| 4 |--|-|--| |--|-|--| |--|--|--| | 4 | | | | | | | | | | | | 4^| | | |^| | | | | | | | |~~~ E|------------------------------|-------------------------------------|--- B|---------------8-12-10-8------|~~~----------------------------------|--- G|-9-7---------9-----------11-9-|(9)-------~~~----------------11-9----|--- D|-----10-9-10------------------|---12-10-9--------------9-12---------|--- A|------------------------------|-------------12-10-9-10--------------|--- E|------------------------------|-------------------------------------|--- Here, a second guitar harmonizes the melody a third up. I notated it above the first guitar part. C5 D5 3 4 sixteenth notes E|-------------------7--10-8--7-------|----------------------------------- B|-8--7-----------8--8--12-10-8--10-8-|----------------------------------- G|-9--7--9--7--9--9--------------11-9-|----------------------------------- D|-------10-9--10---------------------|----------------------------------- A|------------------------------------|----------------------------------- E|------------------------------------|----------------------------------- A5 B5 F#5 ____________ __________ __________ __________ __________ 5 |--|--|--|=| |--|--|--| |--|--|--| |--|--|--| |--|--|--| 4 | | | | | | | | | | | | | | | | | | | | | E|---------------------------------------------------------------|-------- B|(8)-7------H--H------------------7--10-8--7--------------------|-------- G|(9)----9--7^9-^11-------------7-----11-9-----9--7--5--9--------|-------- D|---12-10--9^10^12-10-9--7--9--9--12-------12-10-9--7--10-7--5--|-------- A|------------------12-10-9--10----------------------------9--7--|-------- E|---------------------------------------------------------------|-------- Now the rhythm guitar stops playing chords and doubles the lead an octave below. This part is notated below the lead guitar part. 3 4 sixteenth notes E|------------------------------------|----------------------------------- B|-------------------8--12-10-8-------|----------------------------------- G|-9--7-----------9-----4--2-----11-9-|----------------------------------- D|-2-----10-9--10-2--5--------5--4--2-|----------------------------------- A|----5--3--2--3----------------------|----------------------------------- E|------------------------------------|----------------------------------- ___________3___________ __________ _________ __________ 5 |--|--| |-|--| |--|--| |--|--|--| |--|--|-| |--|--|--| 2 | | 4 | | | | | | | | | | | | | | | | | | | | | 4^| | E|------------------------------------------------------------|----------| B|-----------H--P---------------------------------------------|----------| G|(9)--------------------------------11-9---------------------|----------| D|(2)12-10--9^10^9-------------9--12-4--2-12-10-9--7--10------|----------| A|----5--3--2^3-^2-12-10-9--10-2--5-------5--3--2--0--3--9--7-|(7)--(x)\-| E|-----------------5--3--2--3----------------------------2--0-|(0)--(x)\-| The following riff is very similar to the one leading inth the wacky piano part in The Dance of Infinity at 2:24. __________ ________ _______ _______ _______ _______ _______ ___ 4 |--|--|--| |-|-|--| |-|-|-| |-|-|-| 7 |-|-|-| |-|-|-| |-|-|-| |-| 4 | | | | | | ^ | | | | | | | | | 8 | | | | | | | | | | | | ^ | E|-------------------------------------|-----------------------------|---- B|-------------------------------------|-----------------------------|---- G|-------------------------------------|-----------------------------|---- D|-------------------------------------|-----------------------------|---- A|-------------------------------------|-------------3-3-2-2-1-0---0-|---- E|-12-0-12-11-0-0---10-9-0-8-7-0-6-5-2-|-3-3-2-2-1-1-----------------|---- PM throughout play twice Here, the part leading directly into Strang Deja Vu begins. The same riff is played in the 2nd verse. Tonality oscillates between G# and F Lydian. G#5 G#+11 G# _______ _______ _______ _____ _______ ___ |-|-|-| |-|-|-| |-|-|-| |\ 4 | | |-| | |-| | | |-| | | | | | | | | | | | | ^ 4 O ^| | | | | | |. O | | E|-----------------------------|----------------------|-----------------|- B|-----------------------------|----------------------|-----------------|- G|-----------------------------|-8------------8-------|-7------5--------|- D|-----------------------------|-6--------6-6-6---6-6-|-6------6----6-6-|- A|-------------3-3-2-2-1-0-----|----------------------|-----------------|- E|-3-3-2-2-1-1-----------------|----------------------|-----------------|- PM- - - - - - - - - - -/ PM-/ PM-/ PM-/ G#5 G#6 G#+11 G#5 F5 similar rhythm E|-----------------------|---------------------|-----------------------|-- B|-----------------------|---------------------|-----------------------|-- G|-8-------------10------|-7-----8-------------|-5-------------5-------|-- D|-6---------6-6-6---6-6-|-6-----6---------6-6-|-3---------3-3-3---3-3-|-- A|-----------------------|---------------------|-----------------------|-- E|-----------------------|---------------------|-----------------------|-- sim. C+11 C C5 C6 C+11 C5 similar rhythm E|-----------------------|---------------------|-----------------------|-- B|-----------------------|---------------------|-----------------------|-- G|-4---------2-----------|-5-----------7-------|-4---------5-----------|-- D|-3---------3-------3-3-|-3-------3-3-3---3-3-|-3---------3-------3-3-|-- A|-----------------------|---------------------|-----------------------|-- E|-----------------------|---------------------|-----------------------|-- sim. Here, we have a change to B Lydian. B5 B+11 B C# C#4 C# _______ _____ ____ _____ |-|-|-| |-| | |- | | |-| | | | | | | | ^| |. ^| | | sim. E|-------------------------------|---|-------------------------------|---| B|-7-7-7-7-7-7-6-----4-----------|---|-9-9-9-9-9-9-7-----6-----------|---| G|-4-4-4-4-4-4-4-----4-------4-4-|-%-|-6-6-6-6-6-6-6-----6-------6-6-|-%-| D|-4-4-4-4-4-4-4-----4-----------|---|-6-6-6-6-6-6-6-----6-----------|---| A|-------------------------------|---|-------------------------------|---| E|-------------------------------|---|-------------------------------|---| PM-/ PM-/ G#5 G#+11 _______ ______ ______ _______ _______ |-|-|-| | |-| |-| | |-|-|-| |-|-|-| |\\ | | | | ^ | | | | ^ | | | ^ ^ | | | | ^ E|---------------------------------|-----------------------------------|-- B|---------------------------------|-----------------------------------|-- G|-8-8-8-8-----8-8-8-8-----7-7-7---|---7-7-7-7-------------------------|-- D|-6-6-6-6-----6-6-6-6-----6-6-6---|---6-6-6-6-------------------------|-- A|-6-6-6-6-----6-6-6-6-----6-6-6---|---6-6-6-6-------------------------|-- E|-4-4-4-4-----4-4-4-4-----4-4-4---|---4-4-4-4-------------------------|-- ...at this point Strange Deja Vu begins. RHYTHM NOTATON: Most of the symbols try to look like regular notes. Rests are indicated with ^. ___ ___ ___ __3__ | |\ | | |\\ |-| |=| | | | | | ^ | | | | | | | | | ^ | |. O quarter eighth sixteenth 32nd eighth note triplet dotted half rest (w/rest) note Example of a tied note: This: is a compact version of: ___ _______ __________ | | | = | |\ - | -| |- | --| | ^| | |. | | | | | | | and so on... The numbers beside the notes are, of course, time signatures. TABULATURE EXPLANATION: 1 ~~~~ H P T . -----------------------------------------------------------------|---|---- ---9b----r---------7-------9^11---11^9--------9-14--------5------|-%-|---- -----------------------------------------------------------------|---|---- bend release vibrato hammer-on/pull-off tap staccato repeat (1 whole step) last bar 1 tr~~~~~ P.H. ------------------------}5------------------------------------------------ ---b9--b9----9(11)------}6--------4/5-8\------------x------4------<5>----- ------------------------}7-----------------0-0---------------------------- PM-/ hold bend trill arpeggiate slide palm muted pinch/natural (or pre-bend) mute strum harmonics T tr~~~ \ (\)/ / \ ***** ------------------------------------------------------------------------ ---x\-(x)\----9(16)----------//--------9--------12--------14------7----- ------(x)\-------------------------------------------------------------- pick slide tapped trill repeat whammy bar: or hand slide pattern dive pre-dive pull up flutter Questions, comments, corrections etc. welcome. Traq Piotr Traczyk ptraczyk@okwf.fuw.edu.pl