Musicians share past fears of terrorist attacks at concerts and send condolences to victims, families and Grande
"Ari's fans are my fans, and my fans are Ari's fans"
Perry said she wanted feud to end but also warned Swift that "there's going to be a reaction"
Singer turns "Swish Swish" and "Bon Appetit" into visually inventive performances
Sketch pokes fun at overstuffed hip-hop collaborations like DJ Khaled's "I'm the One"
"I think it's a great anthem for people whenever someone's trying to hold you down or bully you," singer says of 'Witness' single
From stolen dancers to passive aggressive tweets, here's a look back at the source of the alleged "Bad Blood"
"You're a joker, And I'm a courtside killer queen," Perry boasts in the house-y new track
"Bon Appetit" singer is the first confirmed talent for ABC's forthcoming reboot of singing competition
"Bon Appetit" singer reveals bathroom life hack for bizarre costumes during music videos, Met Gala
Massive 43-date arena trek begins September 7th, with ticket buyers receiving copy of singer's upcoming LP
Kogi's Roy Choi seasons, bakes and serves pop star on a platter
Singer said as-yet-untitled LP will not respond to Taylor Swift's hit "Bad Blood," which was rumored to be written about Perry
Drake bows down to Celine Dion, Lil Wayne sips a mystery drink – the latest photos from the awards fest and more
Katy Perry, Rihanna, Nicki Minaj and more hit the massive red carpet in NYC for the 2017 Met Gala; see what everyone wore on fashion's biggest night