Listen and watch music video TiK ToK (Ke$ha)

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Kesha Rose Sebert ( born March 1, 1987), better known mononymously as as Ke$ha, is an American recording artist. An active musician since 2005, her breakthrough came in early 2009 after appearing on Flo Rida's number one single "Right Round". Her debut single, "Tik Tok", was released in August 2009 and reached number one in five countries and set the female weekly download record in the US. Her debut album, Animal, was released in early 2010 and debuted at number one in the US.

Her debut single, "Tik Tok", had been released digitally in the US in early August, and was sent to radio two months later in October.  By then, Kesha had co-written the title song for Miley Cyrus' The Time of Our Lives EP, made appearances on Pitbull and Taio Cruz's albums and appeared on the cover on Women's Wear Daily.

A number one placing in New Zealand for "Tik Tok" gave Kesha her first number one; this was followed by number one positions in Canada, Australia and Norway. It later reached the top of the Billboard Hot 100, the first number one of the decade, and reached top five in several countries. For its second week at number one on the Billboard Hot 100, "Tik Tok" set the female download record and became the second best-selling single in a week, after "Right Round", for shifting 610,000 copies.