All of your favorites, in one place.
Reissue of the definitive solo trombone album, from 1974, with additional material from the same sessions. His first album of this sort, it has been described by Derek Bailey (rather famously) as still the best record of solo free improvising you are likely to find. Maybe it's the only one... if you're thinking of buying a record of solo improvisation you should try and get this one. It's the genuine article.