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
Glory (Britney Spears album) 100, becoming her sixth-highest debut on the chart and 34th "Hot 100" entry. A new version of "Slumber Party" featuring Tinashe was released on November 18, 2016 as her second single. A music video also premiered the same day. The single debuted at number 86 on the "Billboard" Hot 100 issue dated December 10, 2016. It is also her 35th Hot 100 entry. "Private Show" was released as the first promotional single along with the pre-order on August 4, 2016. The song shares the title of her then-latest fragrance. The song was written by Britney Spears, Carla Williams, Tramaine Winfrey