Ariana Grande says the guy who runs the Grammys is a liar for claiming she was just too frazzled to pull it together and perform on Sunday night’s show … she says it all fell apart because he utterly disrespected her.

The deal she wanted was to perform her massive, #1 hit, “7 rings.” We’re told the show’s producer, Ken Ehrlich, told Ariana that song wouldn’t connect with the audience, so he asked her to choose a different song. Ariana felt strongly “7 Rings” was what people wanted to hear, and when Ehrlich wouldn’t budge, she said she’d take a pass.

Fast-forward to Thursday, when Ehrlich gave an interview to AP, saying Ariana backed out because she “felt it was too late for her to pull something together.”

We’re told Ariana is enraged, because she actually continued to talk to the Grammys and offered to perform a song Ehrlich wanted, as long as she could sing “7 Rings,” but he still wouldn’t budge.

Check out her tweets:

https://twitter.com/ArianaGrande/status/1093627215600734208