The source says that Ariana felt "insulted" after producers refused to let her perform "7 Rings" during the show.
The 61st Grammys, hosted by Alicia Keys, airs Sunday, February 10 at 5 PM ET live from the Staples Center in Los Angeles on CBS. While producers eventually compromised by allowing Ari's latest single to be part of a medley, the songstress ended up pulling out after producers insisted that they get to choose the second song.
Metro.co.uk has contacted reps for Ariana for comment. However, it's important to note that Ariana was only rumored to perform at the Grammys, speculation of which the singer tweeted was "false" on January 30.
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One source also claimed that stipulations were not placed on other performers at the show. They include Camila Cabello, Cardi B, Dan + Shay, Post Malone, Shawn Mendes, Janelle Monáe, Kacey Musgraves, Brandi Carlile, Miley Cyrus, H.E.R, Red Hot Chili Peppers, Little Big Town, Diana Ross, J Balvin, Young Thug, Ricky Martin, Arturo Sandoval, Katy Perry, Dolly Parton and Katy Perry.
However, like Ariana, she turned it down.
The 25 year old pop star reportedly had a disagreement with Grammy producers over what song she would perform during the show, according to Variety. Kendrick Lamar and Drake are the top Grammy contenders, earning eight and seven nominations respectively while Brandi Carlile is up for six awards.
File image of Ariana Grande.