The Rolling Stones release more audio from their legendary 1977 shows at the El Mocambo in Toronto

Come next week (May 13), tapes of a couple of 1977 performances at the El Mocambo in Toronto that have been lost (okay, in long-term storage) will finally be officially released through Universal Music.

Live at the El Mocambo documents an interesting time in Stones history. Playing in a tiny dive bar in Toronto was one thing, but this was also when (a) Margartet Trudeau (wife of the then-prime minister and the mother of Justin Trudeau) showed up in all her groupie glory (sans panties, too, according to some pictures that made the rounds), and (b) Keef and girlfriend Anita Pallenberg were busted for heroin possession when the cops raided their room at what was then called The Harbour Castle Hilton. (Keef faced considerable jail time but got off with a warning and an order to play a benefit for some deaf kids.)

The Stones–billed as The Cockroaches and supported by April Wine, who also recorded their gigs–played the Elmo on March 4 and 5, 1977. A few tracks showed up on the Love You Live album but were restricted to covers on one side of a double album. This package features three songs from March 4 (which was essentially a warm-up show) and the entire March 5 performance.

Here’s another sample of what to expect.

Here’s what the vinyl package looks like. It also comes in a two-CD set.

Read more here.