As you remember, Library of Congress shared recently a 8mm film of the Altamont performance. Originally, it was mute.
But after some hours (if not to say, DAYS) of analysis I could restore the audio for the best parts of it.
Here you will see excerpts of 4 songs -
The Sun Is Shining
Stray Cat Blues
Love In Vain
Under My Thumb
The whole thing runs about 5 minutes, but "Stray C