The Flying Burrito Brothers' concert broadcast by WMMR at The Sigma Studios in Philadelphia in 1971 has now been released and is now available.
Chris Hillman, Michael Clarke, Bernie Leadon, Rick Roberts, Al Perkins
The title is "Devils In Disguise - 1971 Live Broadcast"
This recording has been circulating for decades on bootleg tapes and CDs.
Note: we have some doubts about the legality of this release. It's probably unauthorized.