LOS ANGELES (CBSLA) — Pop star Ariana Grande, who pulled out of a scheduled for performance for this Sunday’s Grammy Awards, is calling out the show’s producers over why she won’t be on stage.

Ken Erlich, a producer for the Grammys, previously said Grande – who was in talks to perform during the broadcast – “felt it was too late for her to pull something together” after ongoing conversations for the last month or so.

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Grande took to Twitter to challenge that assertion.

“I’ve kept my mouth shut but now you’re lying about me,” Grande tweeted. “I can pull together a performance overnight and you know that, Ken. It was when my creativity & self expression was stifled by you, that I decided not to attend. I hope the show is exactly what you want it to be and more.”

According to Grande, she offered to perform three different songs but her focus was “about feeling supported”.

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Grande, who has never won a Grammy, is up for two nominations Sunday for solo performance (“God Is a Woman”) and pop vocal album (“Sweetener”).

The 61st Grammy Awards airs Sunday on CBS.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)