Last night, during his gig at the Cambridge Corn Exchange, James Bay surprised fans by bringing out fellow UK musician Ed Sheeran for a duet version of “Let It Go,” a single off his debut album Chaos And The Calm. The chemistry between the two is spot on; their vocals and guitar playing blended flawlessly. On Sheeran’s appearance, James shares: “Ed doesn’t have to turn up and guest on mates’ records or gigs. But he’s a real musician who just really loves to play. What’s awesome for the rest of us is that he’s so generous with that.” Watch the performance below.