We stand corrected and ashamed. About that last MHB. A reader writes:
That recording was actually by The Portsmouth Sinfonia, "a real orchestra founded by a group of students at Portsmouth School of Art in Portsmouth, England, in 1970 -- however, the Sinfonia had an unusual entrance requirement. Players had to be either non-musicians, or if a musician, play an instrument that was entirely new to them."
Another writes:
I recognized it immediately because it was on Dead Parrot Society, a compilation album of British comedy dominated by Peter Cook and the boys of Monty Python.
Another:
Brian Eno was a member for a while and played the clarinet.