Terry Riley and Don Cherry
Koln Concert
Probably 2.23.75
W/ Karl Berger on Vibes

I got this in a trade several years ago. Its wonderful but I have little idea of origins, etc.

Source: ??>CDR>EAC>FLAC

Set list:

1) ??
2) ??
3) ??

Sorry but the sound quality, playing and music are wonderful. Any information is appreciated.