U-God U.G.OSLAVIA U.N.L.V. U108 U2 UB40 Ud3 Udo Uffie UFO UGeen Ugk Ugly Duckling Ugly Kid Joe Uku Suviste Ula Lozar Ulali Ulka Ultimate Force Ultra Ultramagnetic M.C.'s Ulver Umberto Tozzi Umbrella Umc's Ummon Unanimated Uncle Kracker Uncle Murda Uncle Sam Unda Presha Unda Surveillance Under Black Cloud Underground Sound Unit Underworld Uness Unfinished Thought Unforgiven Unheilig Unholy Union J Union Underground Unique Unisexx Unit United Kingdom Uniting Nations Unity Unity Klan Unk Unklejam Unknown Unknown Prophets Unladylike Unleashed Unloco Unlord Unplugged Unseen Terror Unsung Heroes Until June Unwritten Law Up Dharma Down Uranium 235 Urban Mystic Urge Overkill Uriah Heep Ursula Rucker Us3 US5 USB Usda The Used Usher Ustinova Utada Hikaru Utd Utfo Utopia Utrina Uzari & Maimuna