The Underground Music Showcase Adds Over 100 Acts to 2018 Lineup Kait StarrJune 28, 2018 In a recent announcement, the Underground Music Showcase (UMS) has revealed that over 100 new acts including national musicians like DUCKWRTH, Escort, PPL MOVR,... 303 MagazineDenver MusicFeaturedMusicSouth Broadway / Baker2 min read