Deafening review using Google definitions.

(Contraction of it is) a (a small piece or quantity of something) (requiring great physical or mental effort to accomplish) to (perceive via the auditory sense) the (set of words that accompany music, either by speaking or singing) for the (preceding all others in time) few lines.
I like the (yielding readily to pressure or weight) and (difficult: not easy; requiring great physical or mental effort to accomplish) (passage: the act of passing from one state or place to the next) within all the (poetry: literature in metrical form). The (short musical composition with words) has a (pleasant or pleasing or agreeable in nature or appearance) flow to it. It actually goes (in or at or to some place) instead of just (borne up by or suspended in a liquid) and then (aimless wandering from place to place) off.