Thanks to Richard for submitting this informal soundboard recording of Peter Tork jamming with Brian Auger at the 1989 Los Angeles Monkees Convention. Recorded on July 8, it features "Mailbox Blues" and "I'm a Believer," with Peter on guitar and Brian on keyboards.
Auger played a prominent role as a guest star and musical act on The Monkees' 1969 television special, 33 1/3 Revolutions Per Monkee.
This recording was originally featured on the Headquarters radio program that aired on WBAU from Long Island, New York from 1987 to 1989.
Thanks to Richard for cleaning up the tape and letting us check it out.