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Calvin Harris Goes Off On Zayn Malik After Taylor Swift Jab

And Zayn fires right back.

Zayn Malik is charged up, and after dissing Little Mix on Sunday, now he's going after Taylor Swift.

The ex-One Directioner sent out another pointed retweet on Monday (Aug. 17) when he compared quotes from Swift and Miley Cyrus, regarding their views on the music industry. Mainly, Taylor thinks you should pay for music, while Miley is content without money.

But Calvin Harris came to Swift's defense, saying there's a lot more that Zayn, a product of one of the most successful boybands of all time, doesn't understand:

Of course, Malik fans immediately started tweeting at the Scottish producer, to which he responded:

Harris' comments didn't go unnoticed, and Zayn had some responses of his own.

Zayn apparently thought Calvin, the world's highest-paid DJ, embarrassed himself -- to which Harris simply responded: "lol."