Taylor Swift's Ex Calvin Harris Collaborating With Katy Perry on New Album Because Shade Is Alive and Well

The DJ's star-studded upcoming album also features Taylor-hater Frank Ocean, and Swifties are not about it at all.

Shade is alive and well in the music industry.

Calvin Harris revealed his forthcoming new album, Funk Wav Bounces Vol. 1, via social media on Tuesday, and one of the record's many guest stars is none other than Katy Perry.

WATCH: The 4 Biggest Bombshell Accusations From Calvin Harris' Twitter Rant About Taylor Swift

The collaboration is particularly shady given Harris' Twitter rant against his ex-girlfriend, Taylor Swift, last year, where he namechecked Perry, and the years-long media sparring that has gone on between the two pop powerhouses.

Harris' post also includes a teaser of the new music, as well as a slew of featured artists in addition to Perry, including Frank Ocean (who has his own "bad blood" with Swift), Ariana Grande, Snoop Dogg, Future, Pharrell, Big Sean, John Legend, Migos and Nicki Minaj. Just to name a few! Watch the teaser video below to see all of the seriously stacked lineup.

Whether the pair's history with Swift makes it into the album remains to be seen, but you HAVE to imagine it came up once or twice during recording!

WATCH: Katy Perry Reveals She Would Collaborate With Former Friend Taylor Swift -- Under One Condition!

Harris' record with his cavalcade of co-stars drops on June 30, so if Swift is ready to come out of music hiatus, this would be a perfect time to hit us with a surprise album. Just sayin'...

Watch the video below for Swift's biggest moments in 2016.