Joe Alwyn Explains Why Taylor Swift's Grammy-Winning Album Used His Pseudonym [Watch]

Joe Alwyn has revealed why his pseudonym, William Bowery, was used in the writing credits of girlfriend Taylor Swift's Grammy-winning album "Folklore."

The 31-year-old actor explained that he wanted fans to focus on the music rather than their collaboration.

"We chose to do it so the people, first and foremost, would listen to the music first before dissecting the fact that we did it together," Alwyn said Thursday on "The Kelly Clarkson Show." "We did it under the name William Bowery, very fancy."

"It sounds like a kind of Agatha Christie character that should be wearing a monocle with a big mustache," he added.

Alwyn and Swift began dating in 2016. The couple co-wrote two tracks, "Exile" and "Betty," for the 2020 music album "Folklore." Besides writing, Alwyn also co-produced both tracks and four other songs – "Illicit Affairs," "This Is Me Trying," "August" and "My Tears Ricochet."

The actor explained the inspiration behind the name William Bowery. He revealed the first name was inspired by his great-grandfather, who was a composer.

"He wrote a lot of classical music and he wrote a lot of film scores," the actor said about his great-grandfather, before sharing more details about the last name. "And then Bowery is the area in New York that I spent a lot of time in when I first went over there. So, stick 'em together."

This is not the first time Alwyn has spoken about his contribution to the album. Earlier this month, the actor explained how the collaboration was "accidental."

"It was really the most accidental thing to happen in lockdown," Alwyn told GQ. "It wasn't like, 'It's three o'clock, it's time to write a song!' It was just messing around on a piano and singing badly and being overheard and then thinking, 'You know, what if we tried to get to the end of it together?'"

Alwyn will be next seen in the movies "Stars at Noon," "Catherine Called Birdy" and "Hamlet." He will also feature in a miniseries, "Brideshead Revisited."