those collected, roughly.
Updated in Aug, 2012
Pop Rock/ Rock
One Republic
Avril Lavigne
Daniel Powter
Colbie Caillat
Kelly Clarkson
Ashlee Simpson
Tatu (Electric Rock)
Rob Thomas
Backstreet Boys
Chris Daughtry
Fall Out Boy
Jason Mraz
Evanescence
Sara Bareilles
Dido
Queen
Maroon 5
The Fray
The Beatles
Take That
Mika
M2M
Alternative Rock/Brit pop
Noel Gallagher
Oasis
Cold Play (Post-Brit pop)
Muse
Keane (Piano Rock)
Alternative Rock
Manchester Orchestra
The All-American Rejects
Mark Ronson
Jet
Incubus
The Hoosiers
Frente
Fiona Apple
Christina Perri
Ana Johnsson
Punk Rock
Green Day
M.I.A.
Plain White T
Alternative HipHop/Rap Rock
Fort Minor
Linkin Park
Timbaland
Blue Rock
Rachael Yamagata
Folk Rock
Newton Faulkner
Suzanne Vega
Jack Johnson
Damien rice
Cat Power
Soft Rock/Adult Contemporary
Jon Brion
Sarah Mclachlan
Brian McFadden
James Blunt
Pop/Country pop/R&B
Kate Perry
Michael Buble
Leona Lewis
Bruno Mars
Michelle Branch
Lenka
Rox
Lily Allen
Taylor Swift
Sweetbox
Justin Timberlake
Westlife
Rihanna
Fergie
Mariah Carey
Madonna
Hilary Duff
Gareth Gates
Elvis Presley
Jem
Electronic Pop
Owl City
Dance pop/Reggae
David Guetta
Jack Derulo
Lady Gaga
Christina Agulera
Britney Spears
The Pussycat Dolls
Sugababes
Ne-Yo
Black Eyed Peas
Groove coverage
Sean Paul
Sean Kingston
Pop Soul
Sara Bareilles
Celtic/Operatic pop
Hayley Westenra
Folk Pop
Pauline Croze
Feist
Indie Rock/Indie pop/Indie Folk
Peter Bjorn and John
Snow Patrol
Franz Ferdinand
MGMT
Belle and Sebastian
The XX
Ellie Goulding(Electric Pop)
Modest Mouse
Kate Nash
Broken Bells
Arctic Monkeys(Psychedelic Rock)
Zee Avi
Priscilla ahn
Russian Red
New Wave
Nouvelle Vague
Rap/Hip Hop
Eminem
Akon
Chris Brown
Kanye West
Vocal Jazz/Soul/Blues
Adele
Alicia Keys
Norah Jones
Amy Winehouse
Hugh Laurie
Diana Krall
Nat King Cole
Billie Holiday
Frank Sinatra