Jimi Hendrix & John McLaughlin jam 1968
This is the only high-quality version I've heard of this jam, out of several - including falsely titled ones. It's also the best part (being just before the Driving South section).
Why John only took an acoustic guitar (with pickup) to the 'gig' in anyone's guess - I'm sure he had others at the time. Although he couldn't have used one of Jimi's, without re-stringing it first.
Which reminds me - I've finally bought a proper Fender Stratocaster (white, left-handed), after years of owning copies and Strat-style guitars (with all the others). Look forward to hearing it, when I get around to making some new recordings