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
Perfume (Britney Spears song) this performance "would seem that this is a performance that could easily be switched out for something else at a later date", as in the E! documentary "I Am Britney Jean: Britney Spears' Road to Las Vegas" chronicling the show, Spears and her production team stated that the show's setlist could change over time. MTV's Sophie Schillaci elaborated that Spears offered a "heartfelt" rendition for the song, but pointed out that without dancing or pyrotechnics to distract, it was clear the sound was not different from the original version on the album. In August 2014, media speculated that Spears was