PHOTOS: John Mayer In-Studio

John Mayer stopped through to chat with Elvis Duran and the Z100 Morning Show. John discussed what he went through with his voice and how the only thing that was able to help him recover was Botox. It chemically paralyzed his vocal cords and allowed a blister he had in his throat to heal.

John also discussed his collaboration with Katy Perry on "Who You Love." Elvis asked him if the dynamics were different in-studio collaborating with his girlfriend? John went on to say that "She was artist in the studio and partner out of the studio. It was really professional." Watch the video below.