Credited for record producing and reissues. Was active as discographer and liner notes author. Died on May 2nd, 2020.
APPEARANCES +
Various
Free At The German Jazz Festival 1966
2016, 2xCD, Album, be-bop, 
,
, Free Jazz/Avant-garde Jazz/Free Improvisation/Post Bop
Various
More Modern At The German Jazz Festival 1966
2015
Various
Modern At The German Jazz Festival 1966
2015, 2x CD, ,
, Big Band/Contemporary Jazz/Bop/Cool Jazz
Jazz At The Philharmonic
Jazz At The Philharmonic In Europe
2009, Vinyl 180g Virgin Vinyl, Vinyl 180g Virgin Vinyl, Vinyl 180g Virgin Vinyl, Vinyl 180g Virgin Vinyl, Box Set, ,
, Post Bop/Post Bop
Jutta Hipp, Roland Kovac, Bill Grah, Hans Koller, Attila Zoller, Rudi Sehring
Cool Jazz Made In Germany
2000, CD, Comp, Jazz Realities, ,
, Bop/Cool Jazz
Various
Between Or Beyond The Black Forest Vol. 2
2000, CD, ,
, Fusion/Jazz-Funk/Downtempo/Jazz-Rock
Various
Between Or Beyond The Black Forest (Dancefloor Jazz Classics From The Legendary MPS Label)
1999, 2x Vinyl, ,
, Jazz-Funk/Jazzdance
Oscar Pettiford
Jazz Legacy Baden-Baden - Sessions 1958-60
1988
Various Featuring Kenny Clarke, Zoot Sims, Hans Koller, Helmut Brandt, Peter Trunk, Roland Kovac
The Concert 23.6.1958 - Baden Baden - Unreleased Radio Tapes
1988