Unnatural Selection Jennifer Lindberg, Matthew Bellamy Piano, Cello, Altviool, Altsaxofoon, Harp, Drums Indie Rock, Klassiek, Pop Rock, Art-Rock/Progressief, Alternatief
Unsainted Craig Jones, Corey Taylor, Sidney Wilson, James Root, Alessandro Venturella, M. Shawn Crahan Gitaar, Elektrische gitaar, Trommelstel, Drums Metaal, Rock
Unsatisfied Paul Westerberg, The Replacements Gitaar, Elektrische gitaar Alternatief, Pop, Rock, Folk, punk
Undertow Adam Jones, Tony Banks, Daniel Carey, Friedrich Burgmüller, Maynard James Keenan Gitaar, Piano Progressieve rock, Album Rock, Classic Rock, Folk, Pop
Undiscovered Emile Haynie, Martin Brammer, Ashlee Simpson, Amanda Ghost, Devonte Hynes, Steve Robson Gitaar, Piano, Elektrische gitaar Indiepop, Rock, Folk, Pop, Pop Rock
Unsaid Things Thomas Fletcher, Daniel Jones, Harry Judd, Danny Jones, James Elliot Bourne, Harry Mark Christopher Judd Gitaar, Piano, Elektrische gitaar Alternatieve Pop/Rock, Pop, Punk-Pop, Pop Rock, Rock
Unsaveable Bobby Terry, Bekka Bramlett, Faith Hill Piano, Gitaar Hedendaags Country, Country Pop, Pop, Rock, Adult Contemporary
Unskinny Bop Bruce Johannesson, Bret Michaels, Brett Michaels, Poison, C. C. DeVille, Bobby Dall Piano, Gitaar Pop, Rock, Glam Rock, Folk, Hair-Metal
Unsteady Adam Levin, Alexander Grant, Alexander Junior Grant, Casey Harris, Addison Horner, Noah Feldshuh Piano, Gitaar, Sopraan, Altviool, Drums, Bas Indie Electronic, Alternatieve Pop/Rock, Indiepop, Pop, Pop Rock
Until The World Goes Cold Michael Baskette, Corey Beaulieu, Paolo Gregoletto, Matthew Heafy Gitaar Folk, Pop, Pop Rock, Rock
Untitled Finale Alexander Varkatzas, Travis Miguel, Daniel Jacobs, Brandon Saller, Marco McKnight Gitaar, Elektrische gitaar Metaal, Pop, Folk, Rock, Pop Rock
Untitled I Richard Hughes, Tom Chaplin, Tim Rice-Oxley Gitaar, Piano Pianorock, Rock, Alternatieve rock, Britpop, Brit-Pop
Up Adam Messinger, Demi Lovato, Daniel Davidsen, Robert Lange, Mich Hansen, Maegan Cottone Gitaar, Piano, Basgitaar, Marimba, Contrabas, Bas Pop Rock, Folk, Country, Dance-pop, New Age
Up Against The Wall Brad Daymond, Justin Timberlake, Alex Greggs, Jc Chasez, Tom Robinson Gitaar, Piano Pop, Folk, Rock, Pop Rock
Instrumental Duet - Up on the Housetop Francesco Leone, Carolyn Dawn Gardner, Ester Alessandrini, B.R. Handy, Allen Pote, Big Bill Durham Piano, Gitaar, Hoboï, Viool, Tuba, Altsaxofoon Folk, Evangelie, Hedendaagse R&B, Folk Wereld en Land, Jazz
