Jimi Hendrix - Black Gold - new album demo tapes
(supposedly will be released by 2020)
Jimi Hendrix MLK tribute improvisation Newark, NJ - 5th April 1968, after learning of King's assassination.
Hendrix & Zappa jam at the Wreck Bar, The Castaway Hotel, Miami FL, May 20, 1968. Jimi jams on a Guild guitar with Noel Redding, Frank Zappa, Arthur Brown and Jimmy Carl Black (and according to one version, John Lee Hooker).
Zappa mimicking Hendrix on guitar:
Jimi Hendrix sat in with The Mothers of Invention in the early 60's
Dinosaur Jr. demo tapes
Soundgarden early demo tape(s?):
Tad's first Peel session - December 5th 1989:
any and all live bootlegs of Tales of Terror, Dickless, and Truly