Singer-songwriter Ed Sheeran is going to guest star on "Game of Thrones" Season 7.

"Game of Thrones" showrunners reportedly made the announcement at a South by Southwest panel Sunday. According to showrunner David Benioff, the series' executives made the call as a special surprise to Williams, who is a big fan of the singer.

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"For years, we tried to get Ed Sheeran on the show to surprise Maisie, and this year we finally did it," Benioff said during the panel, according to Variety. Variety reportedly reached out to HBO for further details, and a spokesperson confirmed Sheeran would be on the show but simply said, "He has a role. No more details."