Jimi Hendrix of the Experience and Brian Jones of The Rolling Stones connected at the Monterey Pop Festival in June of 1967.  Sadly, Jones died in 1969 and Hendrix in 1970, both at age 27.

This obscure bootleg track is said to have been recorded right after Monterrey in 1967, with the following lineup:

Brian Jones: Sitar and Percussion
Jimi Hendrix: Lead Guitar
Noel Redding: Bass and Vocals (although some fans say that it was Dave Mason)
Mitch Mitchell: Drums

Accompanying  photo montage added by a fan. Cool little jam, not often heard!