Florian Uhlig 440,
Fritz Unger 627,
Lorenz Unger lunger 269,
UNI Percussion Ensemble unipercussion 543,
United Philharmonic Vienna unitedphilharmonic 38,
Universitätsorchester Linz unilinzorchester 310,
University of Colorado Symphony Orchestra Boulder ucsymphony 282,
University of Michigan Symphony Orchestra michigansymph 551,
University of Nebraska-Lincoln Wind Ensemble nebraskawind 355,
University of Northern Iowa Percussion Ensemble iowapercussion 300,
University of Southern California Symphony Orchestra uscorch 505,
Jutta Unkart-Seifert unkartseifert 214,
Clemens Unterreiner 27,
Brigitte Hübner-Urban hübnerurban 3/2, 7,
Jan Urbanner 218/2,
Erich Urbanner erichurbanner 287, 288, 599, 644,
Halina Gorniewicz-Urbas gorniewiczurbas 351,
Aleksandra Utrecht 657, 658,