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Katy Perry, Lady Gaga, Calvin Harris

Vittorio Zunino Celotto/Getty Images, Alberto E. Rodriguez/WireImage, Jason Merritt/Getty Images

Calvin Harris is no newbie when it comes to Twitter feuds.

The music producer found himself in a 140-character squabble earlier today against former One Direction member Zayn Malik, but it seems like the Scottish DJ has had his share of Twitter beef in the past.

In fact, he's even gotten into it with girlfriend Taylor Swift's famous frenemy Katy Perry!

Back in 2011, the Prism singer called Calvin out for pulling out of her U.K. shows last minute. He was scheduled to open for her concerts, but opted against it after getting over the set arrangements.

Clearly, this pissed Katy off, who tweeted at the time:

He reportedly responded, "Sorry to all who wanted to see me with Katy—her team suddenly moved the goalposts and I was to appear on stage with no production."

So, Katy kept going...


The next year, Calvin got some Twitter backlash from Lady Gaga prompted by something he shared on a U.K. talk show.

When asked about rumors he almost worked with Gaga in the past, Harris shared on the BBC Breakfast in 2012 that at the time he was "busy," adding, "You got to pick people whose songs or voice that you like and at that stage, it was before she was very big and they sent me songs that I didn't really like the songs and that's OK. They didn't really send me any of the big songs. It's just one of those things."

So Mother Monster tweeted:

Fortunately, the two musicians were able to hash things out and the spat was short-lived.