Ayu isn't on my list cause there's too many of her songs that I like the same, can't pick just five.
Namie Amuro
CAN YOU CELEBRATE?
Chase the Chance
Sweet 19 blues
GO! GO! ~ Yume no Hayasade ~
body feels EXIT
Maki Goto
Ima ni Kitto...In My LIFE
SOME BOYS! TOUCH
Daite yo! PLEASE GO ON
Yaruki! IT'S EASY
Ai no Bakayarou
Courtney Love/Hole
Plump
Violet
Celebrity Skin
Mono
Doll Parts
Princess Superstar
Coochie Coo
Bad Babysitter
Wet!Wet!Wet!
Famous
Perfect
Bjork
Bachelorette
I Miss You
Human Behavior
Pagan Poetry
Its Oh So Quiet