The footage for this soiree was shot by Christopher Sykes while making
the biography documentary for BBC. Sykes was also responsible for
several films on Richard Feynman. Feynman of course tried to travel to
Tuva, as described in the book Tuva or Bust, co-written by his friend
Ralph Leighton. A few years later, the Tuva throat singers were
introduced to Zappa by Leighton, who was a guest at the soiree and can
be seen in the video, It was thanks to Ralph that Zappa ever heard of
them. The connection to Sykes and Leighton might also explain why
Feynman appears in the thank you list in the MOFO box. Not, perhaps,
because Frank and Dick ever met (Dick died in 1988), but because
somebody explained to Frank about Dick and his life's work and that
had an impact on Frank's thinking about the universe, time and those
waves.