B. B. King - The Thrill Is Gone. New York 1971

LINK BELOW IS FOR ALL 3 BB KING films from this show in one edit
B.B. King - New York 1971 (3 films edit)

Finally identified!
A&R Studios, New York, NY, USA, 26 October 1971.
Full audio from the WPLJ broadcast is around online. At least three songs were filmed and edited into short clips.