The 30+ Best Shows We Saw at the 2018 Underground Music Showcase (UMS) 303July 31, 2018 The 2018 Underground Music Showcase (UMS) took over South Broadway this past weekend with multiple outdoors stages and more than 20 indoor venues. Over the cour... 303 MagazineConcert ReviewsDenver MusicFeaturedMusicSouth Broadway / Baker24 min read