This tape has been around for a while as it was referenced in the David Henderson bio 'Scuse Me While I Kiss the Sky', first published in 1978. The more in-depth reference in Shapiro and Glebeek's Electric Gypsy indicates it was recorded sometime in early 1967 at a London club by a journalist from Beat Instrumental magazine (no name given, sorry) in company of John Mayall's ex-girlfriend Chrissie Charles. As Jimi was being interviewed, Eric Clapton came in and sat down. This was several months after the jam at Polytechnic College where Jimi showed his prowess by jumping up onstage and leading the Cream through his own incendiary version of 'Killing Floor', basically burning Clapton on his home turf. Hard to say how much contact JH and EC had had up to this point, but this may have been their first extended conversation away from the stage.
Jimi dominates the conversation, his enthusiasm and energy bubbling over. Eric is deferential, although not afraid to make his point when he feels it necessary. There seems to be a lot of good feeling between the two, and it seems they both take the competition as a positive thing, a way to make them both work harder to get better. At one point Jimi kisses Eric and says "I just kissed the fairest soul brother in England" (beginning of track 6).