"Can't remember the set list, can't remember much about the music to be honest. I just know that everything changed that night...' writes Bono of the Clash at Trinity College, Dublin, in 1977.
Ian Rankin says 'trying to pin down your single best ever gig is impossible', and then plumps for the Skids at the Pogo-A-Gogo in Kirkcaldy the following year. For Serge from Kasabian it was Oasis at Earls Court a decade later, for Amy Winehouse it was Erykah Badu at Brixton in 2001 (even though she passed out during the set). Broadcaster Charlie Gillett out-cools everyone by picking the Velvet Underground at the Dom in New York, as early as May 1966.
These and 20 other writers, musicians and slebs write about the greatest gig they ever went to in this Sunday's Observer Music Monthly. You can/will be able to see the whole thing here. What's the most memorable show you've ever seen?