Ike shakes his head most of the time when he sings.
With Taylor, he always raises his head I mean kind a like his jaw pointing to you when he sings.
And with Zac, he sings just fine but he sang with a protruding lips in the mmmbop video (Jenny Mc Carthy Show).
A Hanson song wouldn't be complete without the long or short "oooohhhhh" of Taylor either at the intro, middle or the last part. Isn't it obvious???
