"Kravetz" was the only one album released by ex Frumpy Jean-Jacques Kravetz, a French born keyboardist living in Germany. Bluesy prog-rock very well played with obviously Hammond sound but guitars are present, and their parts are at least as long as organ parts, the vocals parts have Inga Rumpf and Udo Linderberg as leaders.

Jean-Jacques Kravetz - organ, piano, synthesizer, percussion.
guests:
Inga Rumpf - vocals.
Udo Linderberg - drums, percussion, vocals.
Thomas Kretzschmer - guitar.
Roger Hook - 12-string acoustic guitar.
Carl Georg Stephan - bass.

I'd like to be a child again.
Ann toomuch.
Routes.
When the dream is over.
Master of time.