System 7 / Derrick May / The Martian / Ambivalent / Polder

Comprised of:

1. System 7 Group, Began: 1990 in London
2. Derrick May Male Person, Born: 04 Jun 1963 in Detroit
3. The Martian Group, Began: in
4. Ambivalent Male Person, Born: in United States
5. Polder Group, Began: 2006 in Amsterdam