"Till The World Ends" Is A Song By American Recording Artist Britney Spears. It Was Released As The Second Single From Her Seventh Studio Album Femme Fatale. "Till The World Ends" Was Written By Alexander Kronlund Kesha Dr. Luke And Max Martin While Being Produced By Dr. Luke Max Martin And Billboard. The Main Inspiration Of The Song For Kesha Was Imagining Spears And Any Other Female Musician Touring The World. "Till The World Ends" Was Released On March 3 2011 And Spears Premiered It The Following Day At Ryan Seacrest's Radio Show. Musically The Song Is A Dance-Oriented Number With A Chant-Like Chorus And Breathy Vocals And Lyrics That Talk About Dancing Until The End Of The World. According To Songfacts A Pre-Famous Kesha Previously Worked With Britney On Her Track Lace And Leather.