Dueling Guitars: Eric Clapton and Buddy Guy Trade Licks in 1969 — Video
The clip, which looks like extra footage from an event called Supershow, also known as "the Last Great Jam of the Sixties," shows Clapton, playing a Gibson Firebird, and Guy, playing a Strat, going head to head, copying each other's licks for a few fun seconds—until things devolve into a pentatonic free-for-all.