Another founding member was keyboard player Rainer Brüninghaus, although he does not appear on the published recordings.
Rainer Maria Rilke | Rainer Werner Fassbinder | Rainer Maria Latzke | Yvonne Rainer | Rainer Ganahl | Archduke Rainer Ferdinand of Austria | Rainer Stadelmann | Rainer Ptacek | Archduke Rainer of Austria | Rainer Schüttler | Rainer Riehn | Rainer Karlsch | Rainer Brüninghaus | Rainer Zitelmann | Rainer Riesner | Rainer Ptácek | Rainer Liedtke | Rainer Langhans | Rainer Hunold | Rainer Hartleb | Rainer Foundation | Luise Rainer | Iris Rainer Dart |
In addition to his activities as a soloist, he has played in and led various jazz ensembles, the quintet "Key" (1974–79), Rainer Brüninghaus Group (1980–84), Kairos (1985–90), Aparis (1989–96), various formations with the Chilean bass player Enrique Diaz (1989-), Possible Worlds (1995-) and the performance lila with sculptor Norbert Müller-Everling at Leverkusener Jazztage.