Found that someone posted a whole Who show from 1975. Nice shots of John and his Alembic (series I?)
Boris
That's Keith Moon making the derogatory comments at the beginning - such a potty mouth from such a wonderful drummer . . . :-`

That was great, good to see John play a  standard point. I had the good fortune of seeing the WHO live with the Grateful Dead !  
Awesome show_____  Thanks for posting this .