Warning: This post contains minor spoilers for season seven of Game of Thrones.

Although showrunners David Benioff and D.B. Weiss had previously announced that Ed Sheeran will make an appearance in the seventh season of Game of Thrones, his character’s story arc has remained largely a mystery. But during a recent interview with The Hits Radio, the “Shape of You” singer revealed some details about his upcoming cameo.

Sheeran explained that the role involves him serenading Maisie Williams, who plays newly-minted faceless assassin Arya Stark on the HBO drama. “I just do a scene with Maisie,” he said. “I sing a song and then she goes, ‘oh, that’s a nice song.'”

The cameo is fitting, as Sheeran’s inclusion in the show was in some ways a gift for Williams, according to Benioff. “For years we were trying to get Ed Sheeran on the show to surprise Maisie, and this year we finally did it,” he said during the Thrones panel at South by Southwest Film Festival.

Get The Brief. Sign up to receive the top stories you need to know right now. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Write to Megan McCluskey at megan.mccluskey@time.com.