I work at Hollister and it seems like every song played has the same regular guy voice, you could never tell they're all different bands. But i know theres only a couple bands with girl-based vocals... i've got a couple, anyone know any others??
A Kiss Could Be Deadly
Lillix
The Ting Tings
Paramore
New Years Day
Everlife
I'm surprised they don't play some Avril Lavinge (her new album fits in perfectly), Veronicas or the Weekend.