Kesha - formerly Ke$ha - is the singer-songwriter behind such hits as "Tik Tok," "We R Who We R" and "Timber." Her 2010 debut album, Animal, reached No. 1 on the Billboard 200 album charts, while her sophomore album, 2012's Warrior, reached No. 6. Kesha has twice topped Billboard's Hot 100 chart, with five more songs reaching the Top 10. Her latest album, Rainbow, will be released on August 11.