Taylor Swift and Calvin Harris are over. But while they were together, it looks like they had a few collaborations going — namely the Scottish DJ's latest hit featuring Rihanna, "This is What You Came For." But it was all under the pseudonym Nils Sjoberg.

According to TMZ, Taylor reportedly "wrote the song, sat down at a piano and did a demo into her iPhone. She sent it to Calvin, who loved it. They both went into a studio and did a full demo with Taylor on vocals and Calvin doing the beat."

As soon as that news hit the interwebs on Wednesday morning (July 13), People confirmed the information with Taylor's rep.

In case you still haven't heard the song, watch the video below.