German progressive/symphonic rock band founded in 1972 in Stuttgart, Germany by Matthias Ulmer (keys & vocals) and Uwe Karpa (guitar). Disbanded in 1986 and reformed in 2000.

Recent lineup:
● John Vooijs – vocals
● Matthias Ulmer – keyboards, vocals
● Uwe Metzler – guitars
● Patrick Paco Müller – bass
● Peter Kumpf – drums

1978–1982:
● Harald Bareth – lead vocals, bass
● Uwe Karpa – guitar
● Matthias Ulmer – keyboards, vocals
● Kono Konopik – drums

1983–1984:
● Harald Bareth – lead vocals, bass
● Matthias Ulmer – keyboards, vocals
● Uwe Karpa – guitar
● Peter Schmidt (11) – drums

1986:
● Michael Braun (5) – lead vocals, keyboards
● Matthias Ulmer – keyboards, vocals
● Uwe Karpa – guitar
● Andy Kemmer – bass
● Goetz Steeger – drums, vocals

2001–2015:
● André Carswell – lead vocals
● Matthias Ulmer – keyboards, vocals
● Uwe Karpa – guitars
● Raoul Walton – bass
● Peter Kumpf – drums