Frank Zappa & the Mothers of Invention - The Lost Broadcast: The Beat Club '68 (2016)

This DVD contains a filmed rehearsal of Frank Zappa and the Mothers of Invention at the legendary Beat Club in Bremen, Germany, on 6th October 1968. The music is largely one long improvisatory continuous performance rather than a run-through of their greatest hits, but is punctuated by Zappa directing the band to play the opening themes of some of his more well-known pieces.

Unfortunately the movie Frank Zappa & the Mothers of Invention - The Lost Broadcast: The Beat Club '68 is not yet available on HBO Max.