Frank Zappa - (1971-07-05) - Montreal - Quebec - Canada[
mp3 | 192 Kb/s | 46,3 Mb | 33,43 min
Genre: Progressive Rock | Presentation on radio | rare disc
This recording is listed as being from various different dates and radio stations. The correct info is hopefully what is listed here. Frank says that they are on CKGM in track 7. CKGM-FM changed to CHOM-FM in October of 1971, and since this tape is often listed as being from November, 1971, the confusion on the radio station has been common. But a close listen reveals that it is CKGM and since Bob Harris is in the band, it has to be from mid-'71.
The Mothers did a live show in Montreal on July 4th, 1971 and this recording was apparently from much later that night (They comment more than once about how it's the middle of the night).