In 1968, an ad from Frank Zappa in the L.A. Free Press read: “The Mothers of Invention cordially invite you to join them on Tuesday, July 23, 1968 when they will be taking over the Whisky a Go Go for 5 full hours of unprecedented merriment, which will be secretly recorded for an upcoming record album. Dress optional. Starting sometime in the evening. R.S.V.D.T.” That album ultimately ended up remaining mostly unheard, until now. The live collection Whisky a Go Go, 1968 is set to finally be released June 21st, 2024, via Zappa Records/UMe.