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
3 (Britney Spears song) 3 (Britney Spears song) "3" is a song recorded by American singer Britney Spears for her second greatest hits album, "The Singles Collection" (2009). It was written and produced by Max Martin and Shellback, with additional writing from Tiffany Amber. The song was released on October 2, 2009 by Jive Records, as the only single from "The Singles Collection". "3" is an uptempo electropop song that features a heavy bassline and synthesizers, and lyrics that talk about threesomes, while referencing American folk-singing trio Peter, Paul and Mary during the chorus as sexual slang. "3" received positive appreciation from contemporary music