Canaille (1991 )
El carpincho -Bellaphon L+R (1990)
I was just... -free flow music (1991)
Marilyn Mazurs Future Song -Vera Bra Rec. ,
Oh, Moscow -victo (1991)
Sahara Dust -Intakt (1993)
Sonetburger-Foolish Music (1993)
Duo Rek/Plenar -Bellaphon (1994)
Behind the Night -B&W (1995)
M.M.Future Song "Small Labyrints" -ECM (1997)
Gestalten des Augenblicks/solo -Audiolab (1997)!! neue Auflage unter dem Titel "klavier improvisationen"www.amphion.de
Duo Roelofs/Plenar "Pas de Deux"Audiolab(1998)
M.M.Future Song "All the birds"Jazzpaar
M.Mazur/Future Song "Daylight Stories" (stunt records 2004)
Goosmann Plenar Hirsch (orkestrion-schallfolien)