The Slovakian musician B-Complex (aka Matia or Maťo Lenická) is a drum and bass music producer and DJ. Prefers the name Maťo when presenting as a man and the name Matia when presenting as a woman.[1] The artist's first major label release was "Beautiful Lies", which appeared on the compilation Sick Music from Hospital Records. The compilation went on to reach the top 30 on the iTunes UK Download Chart, and was in the top 5 on the Beatport Drum and Bass Chart.[2][3] B-Complex goes by she/her pronouns (according to her Soundcloud bio), and says, "I happen to be a transgendered person as well, bi-gender in particular."[4]