Circus (Britney Spears album) "Circus" marked the longest time she had spent recording an album, adding, "I think it is more urban [...] I'm writing every day, right here at the piano in this living room" and also described the album as her best work to date. Producer Claude Kelly discussed the album's initial lack of concept saying, "When I went in with [Dr. Luke] we knew we were going to maybe write something for [Britney], but there was no concept, it was just knowing her style and knowing what she does. Max Martin, who produced Spears' debut single "...Baby One More Time", produced
Britney Spears urges of adolescence, the tension between chastity and sexual experience, between hedonism and responsibility, between confidence and vulnerability." Producer William Orbit, who collaborated with Spears on her album "Britney Jean", stated regarding her vocals: "[Britney] didn't get so big just because [she] put on great shows; [she] got to be that way because [her voice is] unique: you hear two words and you know who is singing". Spears has also been criticised for her reliance on auto tune. Spears has cited her major influences in her career as being Madonna, Janet Jackson, and Whitney Houston, her "three favorite artists" as