Kesha Rose Sebert (/ˈkɛʃə roʊz ˈsɛbərt/ KESH-ə ROHZ SEB-ərt; born March 1, 1987; formerly stylized as Ke$ha) is an American singer, songwriter and rapper. In 2005, at age 18, Kesha was signed to producer Dr. Luke's label Kemosabe Records. Her breakthrough came in early 2009 after appearing on American rapper Flo Rida's number-one single "Right Round". Kesha's music and image propelled her to immediate success, with her debut album Animal premiering at the top of the charts in several countries. She achieved 3 more number-one singles, "Tik Tok" and "We R Who We R" as a solo artist, and "Timber" as a featured artist. At the same time, she continued to write songs for other artists, becoming respected as a songwriter. Warrior, her second studio album, was released in 2012, and spawned her eighth consecutive top-ten single "Die Young". "Tik Tok", at one point, was the best-selling digital single in history, selling over 14 million units internationally.
Since 2013, Kesha has been in legal dispute with her former producer Dr. Luke, in which a series of lawsuits (known collectively as Kesha v. Dr. Luke) were exchanged between the two parties. Kesha alleged physical and emotional abuse and employment discrimination against Dr. Luke, while Dr. Luke claims breach of contract and defamation against Kesha. During this period, the singer only managed to release one single. She returned to music in 2017 with the release of her third studio album, Rainbow, and its lead single "Praying".
Kesha has been involved with animal rights and LGBT activism. She has received several awards and nominations, including her win for MTV Europe Music Award for Best New Act in 2010. As of November 2013, she has reportedly sold over 33 million records in the United States and 60 million records worldwide.