Katy Perry, Katheryn Elizabeth Hudson

Musical style and themes
Perry has a contralto vocal range. Because of her low vocal range, she lowers the key of many of her songs while singing live in order to perfect her sound. Among Perry's musical influences are Alanis Morissette, pop rockers Cyndi Lauper, Pat Benatar, Joan Jett, Shirley Manson, and Freddie Mercury, the late frontman of the British band Queen. Growing up listening to gospel music, Perry had few references when she began recording songs. Asked by the producer with whom she would like to collaborate, Perry had no idea. That night, she went with her mother to a hotel. Inside, she turned on VH1 and saw producer Glen Ballard talking about Morissette; Ballard produced Morissette's Jagged Little Pill, the album that had a "huge influence" on Perry. She told her initial collaborator that she had decided to work with Ballard. The producer arranged a meeting for her and Ballard in Los Angeles. Perry presented him a song, and a day later she was called. Ballard developed Perry for a few years.
Perry described her music by saying, "Someone kind of penned it for me the other day, and I've been using it ever since." According to her, she has "changed a lot between the ages of 15 to 23." Her first album dwells on Gospel music. She related that her perspective in music was "a bit enclosed and very strict", and everything she did was church-related. Her second album, One of the Boys, is described as "secular" and "rock," and reflects a departure from her religious musical roots. Perry expects to record more pop songs for her next album.