On September 20th, 1976 singer Siouxsie Sioux, and bassist Steven Severin asked Malcom McClauren if they could replace an act that had been scheduled to play the 100 Club Punk Festival but canceled last minute. This was a chance to open for the headliner that night—Sex Pistols—who inspired Severin and Sioux to start a band.
But in fact, they did not even have a band yet, and borrowed a pre-Pistols Sid Vicious on drums and pre-Adam and the Ants Marco Pirroni on guitar, and performed a set that consisted of a 20-minute improvisation based on The Lord’s Prayer.
And here is an interview recounting the 100 Club Punk Festival gig below:
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