There are at least four groups that go by the name of Brethren. 1) American Power Electronics 2) Brethren (Phyx x Tickets) are the psy trance band based in Cape Town, South Africa; consisting of 2 brothers Ian and Josef Summs. From their shows and releases you can expect dark melodic dance music with a lot of groove, psychedelics, and symphonic elements. 3) The Aussie hip-hop crew, Brethren, are a two man team of Mistery (Matthew Peet) & Wizdm (Claude Rodriguez) from Sydney. Both individuals are veterans of the hip-hop scene in their own right.