Britney Spears Zone" and "Blackout". She has also experimented with genres such as dubstep, first on "Blackout"'s "Freakshow" and again on "Hold It Against Me" from "Femme Fatale". Spears' music also has been described as Spears is a soprano. Prior to her breakthrough success, she is described as having sung "much deeper than her highly recognizable trademark voice of today", with Eric Foster White, who worked with Spears for her debut album "...Baby One More Time", being cited as "[shaping] her voice over the course of a month" upon being signed to Jive Records "to where it is today—distinctively, unmistakably Britney". Rami
Britney Spears: Piece of Me Tour United States are sponsored by PepsiCo, while the UK shows are sponsored by Britney Spears Fragrances. The tour received polarizing reviews throughout its run. Cristina Jerome from the "Miami New Times" stated "The Piece of Me Tour was for Britney Spears’ day-one fans. The Princess of Pop allowed her audience to experience her career from the late '90s to the present day while sprinkling in a few hits from her latest studio album, Glory." Although complementing Spears' show production and stage presence, accusations of lip-syncing were mentioned. In defence of Spears' lip-syncing accusations, Louis Staples from "The Independent" reviews the