Troubled singer Britney Spears' comeback single has made its long awaited debut. The pop track Gimme More was officially premiered on Thursday night (30Aug07) on New York radio station Z-100's web site. The singer announced the catchy track, saying, "It's Britney, b**ch." Spears hasn't released an album since B in the Mix: The Remixes in 2005. Her last LP containing new material was Into The Zone in 2003.