Actuel Festival, Mont de lnclus, Amougies, Belgium, 25 October, 1969. Frank Zappa’s jams with Pink Floyd on a very extended Interstellar Overdrive. This performance was featured on several French TV programs. This clip is from the film Music Power, a documentary on the Actuel Festival. This is probably one of the most coolest jams of all time: https://www.youtube.com/watch?v=f7Eyw-3Rf3E