H: Haley Bennett, Harry Connick Jr, Harry Nilsson, Hawthorne Heights, Hi-Five, Hinder, The Hollies, Holly Brook, Hoobastank, Hootie and the Blowfish, Howard Jones, Howie Day, Huey Lewis and the News, Hugh Grant
I: Icicle Works, Imogen Heap, Incubus, INXS, Indigo Girls, Ingrid Michaelson, Iron & Wine, Ivy
J: Jack Johnson, Jeckie DeShannon, Jackson Browne, James Blunt, James Brown, James Taylor, James and Morgan Garrett, Jamie Cullum, Jane Birkin, Janet Jackson, Jann Arden, Jason Mraz, Jefferson Airplane, Jem, Jericho Road, Jet, The Jets, Jewel, Jim Brickman, Jim Croce, Jim Sturgess, Jimi Hendrix, Joan Baez, Joe Cocker, Joe Jackson, John Legend, John Lennon, John Mayer, Johnny Cash, Jon Schmidt, Jordin Sparks, Josh Groban, Josh Kelley, Joshua Radin, Journey, Julie De Azevedo, Justin Timberlake
K: Kaiser Chiefs, Kajagoogoo, Kanye West, Kate Earl, Kate Voegele, Katharine McPhee, K-Ci and Jo-Jo, Keane, Kelly Clarkson, Kenneth Cope, Kermit the Frog, The Killers, Kimya Dawson, Kings of Convenience, The Kinks, Kirby Heyborne, Kiss, Kristen Chenoweth, KT Tunstall, Kurt Bestor
L: The La’s, Leann Rimes, Led Zeppelin, Lenny Kravitz, Les Miserables Soundtrack, Lesley Gore, Level 42, Lex De Azevedo, LFO, Lifehouse, Linkin Park, Lionel Richie, Lisa Loeb, Lit, Live, Louis Armstrong, Lulu, Lynyrd Skynyrd
M: Madonna, Mana, Marc Broussard, Mariah Carey, Maroon 5, Martina McBride, Marvin Gaye, Mary Chapin Carpenter, Mary J Blige, Matchbox Twenty, Mat Kearney, Matt Nathanson, Meatloaf, Mel Torme, Metallica, Michael Buble, Michael Jackson, Michael McLean, Michelle Branch, The Mindbenders, Missy Higgins, Moby, Modest Mouse, Monica, Monkees, Moody Blues, MooseButter, Mormon Tabernacle Choir, The Motels, The Muppets, Muse