Your favorite Ayumi song to sing?

[zyoeru]

I try and sing all her songs...but I can't really sing. >.<
My current favourites to sing are:
GREEN, Mirrorcle World, SEASONS, talkin' 2 myself, glitter, untitled ~for her~, I am.., evolution, Trauma, TO BE, Boys & Girls, ANGEL'S SONG, Memorial address, Life, STEP you, Will, rainy day, Moments, About You, GAME, HONEY, HANABI, Voyage.

I'm currently trying to sing INSPIRE...it's too hard though. :S