Hey i was just checking this out and i figured cause i work for hollister i could help out a little bit. Here is a list of some popular hco artists and songs...
All Time Low - Six Feet Under The Stars
Boys Like Girls - Dance HAll Drug
Boys Like Girls - 5 Minutes To Midnight
Cartel - Fortunate
Cartel - Lose It
Fall Out Boy - The Take Over, The Breaks Over
Head Automatica - Beating Hearts Baby
Head Automatica - Graduation Day
Hellogoodbye - All Of Your Love
Just Surrender - Your Life And Mine
Love Arcade - Keep It Comin'
Motion City Soundtrack - This Is For Real
New Found Glory - Kiss Me
Son Of Dork - Ticket Outa Loserville
The Format - She Doesn't Get It
The Format - Oceans
The Killers - When You Were Young
The Kooks - Ooh La
The Starting Line - Island
The Starting Line - Best Of Me
Yellowcard - Light Up The Sky
Young Love - Find A New Way To Dance
There you go guys good luck with those i hope i helped.