[namiie]

Maybe this should be a poll?

momentum, definitely. Ayu's voice sounds better in it (she hits the notes better than in JEWEL, in which some parts seem a bit scraggly). The composition really gets loud at the right time (the more emotional moments) and while it is upbeat it still matches the sorrowful tone of the song, just like in "M" (in which the composition is similiar--guitar riffs, melody shifts, background subtle bells, etc).