Underdogma Records Independent groove-oriented label. Artists include Ironbros and Alabama Thunderpussy. Discography and on-line ordering. http://www.underdogma.com/

Uvulittle Records Non-conventional indie music. Artists include Yid Vicious, Stephanie Rearick, and Milkbaby. MP3s, catalog, mailing list, links, and online store. http://uvulittle.com

Underground Sounds Alternative music label based in London, England. Artists include Low-Fi Generator, Noonday Underground, and Alcohol. MP3s, catalog, and links. http://www.undergroundsounds.co.uk

Ultimate Dilemma Recordings London breakbeat label. Artists include Runaways, Jadell, 45 King, Tim Hutton and Common Ground. News, audio clips, catalog, links, and online store. http://www.ultimate-dilemma.com/

The Unit Circle Rekkids Seattle based avant garde and experimental label. Artists include Bethany Curve, Degenerate Art Ensemble, Amy Denio, Bill Horist, Intonarumori, and Jupiter 88. News, discography, audio, video, links, and ordering information. http://www.unitcircle.com/rekkids/

Undifinable Rekerds North Carolina indie. Artists include AV, Emotion Sickness, Cam-Zen, and 7 Ton Diesel. Catalog, tour dates, and artist links. http://www.undifinablerekerds.net

Up Records Artists include Modest Mouse, Quasi, Built to Spill, Duster, The Concretes, Land of the Loops, and Enemy Mine. News, tour dates, MP3s, and ordering information. http://www.uprecords.com

U Down Records Summerville, South Caroline hip-hop and R&B label. Artists include Maurice Worrell, Marcus Allen and Brasco Da Game. Artist profiles, MP3s and contact information. http://www.udownrecords.com

Urban Cheese Records Alternative music label based in Seattle, WA. Artists include The Cocktail Revisionists, DC to Daylight, Steven R. Brooks and Blockhead. MP3s, biographies, and links. http://urbancheese.com

Utopian Records Non-profit anti-war compilation label. Discography, news and links. http://www.angelfire.com/rebellion/utopianrecords

Uproar Recordings UK Indie label, home of the Rotten Heroes, Servants Of Charon and The Creation. Label history, discography, audio and online store. http://www.uproar-recordings.co.uk

Uprok Records Seattle Washington hip-hop label. Home to Tunnel Rats, ill harmonics, KJ-52, New Breed, Playdough, and LPG. http://www.uprokrecords.com

Union Recordings San Francisco indie. Free full length MP3 albums are available by request. Artists include Eddy Osney, Ambrose Bierce, Buzzshackler, and Kavune. http://unionutile.org/unionrecordings/

Tight Spot Records Austin, Texas, USA. Home to Bedbug, Fivehead, and Masonic. Includes band and release information, sound clips, and reviews. http://www.tightspotrecords.com/