PRNewsFoto/Def Jam Recordings2015 kicked off with the surprise release of “Only One,” a song featuring and co-written by Paul McCartney and rap star Kanye West that, according to a press statement, is the first recording to emerge from “a prolific musical collaboration” between the two stars.

The former Beatle began working with West in early 2014 at a bungalow in Los Angeles, with “Only One” being one of the results. The song holds special meaning for the rapper and his family, and came together while he and McCartney were brainstorming ideas, with Sir Paul playing keyboards as Kanye sat his daughter North on his lap and began singing “Hello, my only one…”

West says he was creating lyrics in a stream-of-consciousness riff and didn’t realize until he listened to the recording afterward that many of the words of the ballad had not come from him. Kanye says his late mother, Donda West, who died in 2007, spoke through him that day. “My mom was singing to me, and through my daughter,” West said. He told people at the recording session that his first name was chosen by his mother, and it means “only one.”

“Only One” was released as a digital single on Thursday via iTunes, and will be featured on Kanye’s forthcoming untitled studio album. You also can listen to the song and check out its lyrics now at West’s official website.

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