"Do you know what, though? I feel like that could happen to anyone," he explained, telling the hosts that "the exact same thing" happened to him when "the in-ears just didn't work." Luckily, he wasn't alone, as his best friend and fellow musician, Taylor Swift, was by his side.
Sheeran further defended Carey, explaining that performing live in New York City is no easy feat.
"She's in the middle of Times Square with no monitors. It's really difficult," Sheeran said. "You can't sing in tone for that. I know people [were] watching that and poking fun at her, but that's a really, really horrible situation to be in, because you're just there, powerless."
"You can hear the track, but the track happens, it's like a two-second delay," he continued. "So if you try to sing, it would sound dreadful. So, [Mariah's] stuck in the middle of that being like, 'If I sing it's going to sound dreadful, and there's no monitors in front of me.' So I didn't watch that and find that funny. I watched that and was like, 'Oh my God, that could have happened to me, to anyone.'"
"I feel like most musicians watch that and -- obviously the public doesn’t know that, they'll just be like, 'Oh, something didn't work,'" he added. "But I watched that and was like, 'Oh my God, what would I do in that situation?' … I would hate for people to not think I was musical because the sound wasn't working properly."
Sheeran also opened up about new music (his new album ÷ drops March 3!), and his triumphant return to the spotlight following a year-long hiatus.
Sheeran told Cubby and Carolina that his reason for dropping two new singles -- "Shape Of You" and "Castle on the Hill" -- on the same day earlier this month was because he "didn't want people listening to one song and judging an album off one song."
"The [new] album is called Divide, so there's lots of different sounds on there," he added. "Choosing one seemed a bit silly."
To hear more on Sheeran's catchy new tunes, watch the video below!