Katy Perry and Diplo are no longer making sweet music together.

Multiple sources tell In Touch the pair have split after a one-month courtship, and it's because the 35-year-old DJ decided to call things off.

“Diplo broke up with her because she does not want to be in a serious relationship. She's doing OK and not too sad about it. They wanted different things," a friend of Katy's tells the mag. "She freaked out when he wanted to introduce her to his parents. She doesn’t want to get married again — at least not anytime soon.

“She wants to date and he wanted something much more serious. It was too much, too soon."

Katy Perry Ignoring John Mayer's Text Messages

A second insider says Katy, 29, "was really into him," but with both of them working so much, the producer thought it wasn't a "fair" situation. The brunette bombshell is currently on her Prismatic World Tour in the U.K.

The romance revved up shortly after the “Roar” singer ended her on-and-off relationship with crooner John Mayer earlier this year.

She was previously married to Russell Brand.

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