At the Greenwich Summer Sessions a couple nights ago, Mark Ronson & The Business Intl. paid tribute to the DJ-producer’s friend and collaborator, Amy Winehouse, on stage. Vocal duties for the upbeat, feel-good “Valerie,” sung to perfection by Winehouse on Ronson’s 2007 album, Version—are turned over to the crowd in a joyous homage. While several band members and backup singers who had performed with Winehouse provide the soundtrack.

“We want you to sing at the top of your lungs,” Ronson requests of the London fans. “Amy, this is for you.”