Just a few short hours ago, TMZ broke the news that Taylor Swift wrote Calvin Harris’ current hit, the Rihanna collab “This Is What You Came For,” and wanted to remain uncredited. The Scottish DJ, born Adam Wiles, confirmed the revelation on Twitter soon after in a relatively amicable way:

And she sings on a little bit of it too
Amazing lyric writer and she smashed it as usual https://t.co/vW3yGOIJit

— Calvin Harris (@CalvinHarris) July 13, 2016

But in a matter of minutes, his candor escalated into rage — maybe because he got word that Swift’s team leaked the news themselves? — and he invoked the legacy of Swiddleston and even alluded to her long-standing beef with Katy Perry. Read below:

I wrote the music, produced the song, arranged it and cut the vocals though. And initially she wanted it kept secret, hence the pseudonym

— Calvin Harris (@CalvinHarris) July 13, 2016

Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though

— Calvin Harris (@CalvinHarris) July 13, 2016

I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do

— Calvin Harris (@CalvinHarris) July 13, 2016

I know you're off tour and you need someone new to try and bury like Katy ETC but I'm not that guy, sorry. I won't allow it

— Calvin Harris (@CalvinHarris) July 13, 2016

Please focus on the positive aspects of YOUR life because you've earned a great one

— Calvin Harris (@CalvinHarris) July 13, 2016

God bless everyone have a beautiful day

— Calvin Harris (@CalvinHarris) July 13, 2016

What’s going on!?!

UPDATE: Katy Perry has … weighed in (?) with a Hillary Clinton GIF:

pic.twitter.com/m6ebYV8D1r

— KATY PERRY (@katyperry) July 13, 2016

2016, people!