An old pal of mine who was a long-time McLaughlin/Mahavishnu fan and collector was listening to the Yale University show, and said that the track that begins with Jan Hammer's solo...around 12:00 into the last track as presented here...was announced from the stage on more than one occasion as "Muse Blues" (gigs he attended in the DC/Baltimore area). I cannot provide any additional confirmation but trust my pal 'cuz he just has one of those baseball-card-collector brains when it comes to Old Things McLaughlin & Mahavishnu.