This fascinating film has just been posted on youtube. It’s 9 mins or so documenting a Sri Chinmoy parade and concert in New York – on March 8 1975 (the November 75 attribution is incorrect: McLaughlin had moved on from Chinmoy by then).
A rare opportunity to see Mahavishnu & Devadip doing their thing on the back of a float and, from 4:50 on, a rare opportunity to hear the singing voice of the Mahavishnu.