She is one of the biggest pop stars in the world, yet Grammy producers reportedly didn't want Grande to perform her new single, “7 Rings." With Drake, Kendrick Lamar and Childish Gambino also not expected to perform, Sunday's ceremony will be short on star power. "It is mystifying that the Grammys wouldn’t let her do literally whatever she wants, especially given that what she wanted to do was perform the no. 1 song in the country," says Rob Harvilla. He adds: "The Grammys have no feel for rap, R&B, and upper-echelon pop, and consequently have been bleeding credibility and goodwill for years. It is genuinely impressive that this situation keeps getting worse...This was supposed to be the year the Grammys figured it out, or at least radically shook things up in a tacit acknowledgment that they still don’t have it figured out. Instead, prepare yourself for, like, five separate Sting duets with random, ridiculous people, all punctuated by an Album of the Year victory for Post Malone. It’s music’s biggest night, after all. It is also, reliably, the dumbest." ALSO: Music exec say Grammys made a "big mistake" losing Grande.