Zach Braff was in on the action, too.
So, Jon Snow and Zach Braff walk into Ed Sheeran's house in the middle of the night... Nope, that's not a joke.
Sheeran recently hosted the cast of Game of Thrones for an impromptu late night soiree -- which apparently turned into an album listening party -- the singer said in a radio interview on The Cooper Lawrence Show on 106.1 WBLI in Long Island, New York, on Friday. The interview will air in its entirety at 8 a.m. ET on Monday.
"All of the Game of Thrones cast ended up around my house the other day, really randomly," Sheeran said. "And they ended up getting subjected to a listening session."
LISTEN: Hear Ed Sheeran's Two New Songs!
The 25-year-old "Castle on the Hill" singer revealed that actors Alfie Allen, Maisie Williams, Sophie Turner and Kit Harington were among the partygoers, along with former Scrubs star, Braff.
"That was a weird one," he admitted. "It was quite a weird night because there was a party going on ... and I got back to [my house] at 2, and then I just got a text being like, 'Oh, the party's over. Can we come to yours?' and I was just about to go to bed, and I was like 'Oh, alright. Whatever.' And then all of them turned up and it was really surreal."
Sheeran also said that he's a "massive, massive" fan of the HBO fantasy drama, and that the actors are "really fun" to hang with.
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Fans got their first taste of Sheeran's upcoming third studio album, titled ÷ (pronounced "divide"), on Friday when he released two new songs: "Castle on the Hill" and "Shape of You."
"I wanted to give a broad look on what the album sounds like," Sheeran explained on The Cooper Lawrence Show. "It's a very kind of schizophrenic sounding album that's all different sounds and one song would not accurately represent it, so I decided to choose two and chuck them out there."
After taking about a year off from promoting his last album, 2014's x (pronounced "multiply"), Sheeran is already very busy plugging the new project. In a separate appearance on BBC's Radio 1 Breakfast on Friday, he admitted to saying "loads of stuff that was not good to say" in a new magazine interview. "I was like, 'Should I have media training?' because I've been away for a while," he joked.
See what else he said about pal Taylor Swift and returning to the spotlight in the video below.
WATCH: Ed Sheeran Says He'll Go on Tour in 2017 and Hints at New Music From Taylor Swift