Technical Death Metal
Technical death metal (or tech-death) is a musical subgenre of death metal with particular focus on challenging, demanding instrumental skill and complex songwriting. Experimentation in death metal began in the late 1980s and early 1990s by four bands that, according to Allmusic, are "technical death metal's Big Four" – Death, Pestilence, Atheist, and Cynic; all but Pestilence being part of the F…