Kesha Rose Sebert (born March 1, 1987), better known by her first name Kesha (pronounced /ˈkɛʃə/ KESH-ə, stylized Ke$ha), is an American pop singer and songwriter and has been an active musician since 2005. Her breakthrough came in early 2009 after an uncredited appearance on Flo Rida's number one single "Right Round". Her debut single, "Tik Tok," was released in August 2009 to much commercial success. It reached number one in eleven countries and set the weekly records for the most digital downloads of a female artist and of the total Top 40 Mainstream airplay records in the US. The song also became the longest running number-one debut single by a female artist since 1977. Her debut album, Animal, was released in early 2010 and debuted at number one in the US.