 However, many of the songs of "Blackout" were performed on her tour The Circus Starring Britney Spears in 2009.In November 2003, while promoting her fourth studio album "In the Zone", Spears told "Entertainment Weekly" that she was already writing songs for her next album and was also hoping to start her own record label in 2004.Henrik Jonback confirmed that he had written songs with her during the European leg of The Onyx Hotel Tour, "in the bus and in her hotel room between the concerts."