The show was typical in that it started an hour late, pretty much par for the course on this outing. But things took an unexpected turn when former GN’R bassman Duff McKagan joined Axl Rose for “You Could Be Mine,” “Nice Boys,” “Knockin’ On Heaven’s Door” and “Patience,” according to Spin Magazine.

The impromptu appearance marked the first time in 17 years McKagan and Rose have performed together. Published reports indicate it was pretty much a spur-of-the-moment decision after both rockers discovered they were staying at the same London hotel.

But McKagan’s jamming with his old bud wasn’t the only Guns N’ Roses news coming out of the U.K. Current GN’R guitarist Ron “Bumblefoot” Thal and drummer Frank Ferrer met up with some young fans at the Witchwood School Of Rock where they talked about music and jammed with the students.

Turns out Ferrer saw the school gig as something a bit more daunting than playing in front of thousands, according to the BBC.

“I’m actually more nervous going and talking to kids than I am playing in front of 20,000 people, because you don’t see them,” Ferrer said. “Here you’re going to see every little kid’s face.”

Click here to read the Spin article and here for the BBC’s report.