This show survives in two known source recordings, according to Project '78:
· the more common of these recordings is more-or-less complete (three songs are clipped at the beginning or end), but it plays at the wrong speed and is in mono
· the less common of these is much better sounding (it's richer in tone, in full stereo, and plays at the correct speed), but it is also far from complete -- the taper managed to catch only 18 full and 4 partial songs of the 27 that Bob played
This remaster reconstructs the show using the best surviving version of every song played. Accordingly, there are 9 tracks culled from the mono tape -- speed-corrected, de-hissed, compressed and normalised where necessary, EQ'd to taste, and placed into slight "fake stereo" for added depth. These are combined with the 18 complete songs from the stereo tape, which have also been tidied up to the best of my abilities.
source for the stereo tape is derived digitally from the master by the original taper; source for the mono tape is said to be "low generation" and was the best sounding copy found.