Heaven 17 are an English synth-pop band formed in Sheffield in 1980. The band was primarily a trio, consisting of founding Human League members Martyn Ware (keyboards, drum machine, vocals) and Ian Craig Marsh (keyboards), along with vocalist Glenn Gregory.
Most of their recordings were made during the 1980s. The band has occasionally reformed since then and performed live concerts, with their first live performances taking place in 1997.
Full Wikipedia article: https://en.wikipedia.org/wiki/Heaven_17 .