The Violent Sequence

'The Violent Sequence' is a instrumental piece with a duration of almost 20 minutes. It was made for the film 'Zabriskie Point', but not used. It was played live for the first time in Birmingham February 11, 1970. You can recognise parts of several songs, including 'Heart Beat, Pig Meat' and a part called The Riot Scene which would later become 'Us And Them'. Another part of the song was later played live and called: 'Corrosion'.

https://pinkfloydhyperbase.dk/unreleased/#THE_VIOLENT_SEQUENCE

Other notes needing more research: On Bootlegs The Riot Scene often gets called The Violent Sequence. And we also have bootlegs with a six minute version of The Violent Sequence which is probably The Riot Scene. Or maybe it is The Riot Scene with another track added from the main sequence?

The 21mins Violent Sequence as played in Birmingham is often named as four tracks:
Heart Beat, Pig Meat / Quicksilver / Moonhead / The Violent Sequence