Christine Cobb+FollowKaty Perry's Big Decision on IdolKaty Perry has officially ended her journey on American Idol, calling the experience "suffocating." The pop star wants to focus on her music career and is set to launch her "Lifetimes World Tour." Even with Carrie Underwood stepping in as a judge, Katy hasn't looked back and isn't watching this season. #KatyPerry #AmericanIdol #CarrieUnderwood #PopStarLife #MusicTour #Entertainment81Share