On July 23, 1968, Frank Zappa & The Mothers of Invention took over the Whisky a Go Go for an all-night affair. FZ recorded the entire evening with the possibility of an album project.

Although bits and pieces were released by Zappa over the years, a full live album never happened, and the tapes sat in the Vault for 55 years.

This 2LP 180-gram vinyl edition features highlights from all 3 sets and liner notes by Joe Travers.