Hip hop diva Ke$ha bumped Jay-Z out of the Number One spot on Billboard's Hot 100 today with "Tik Tok", the debut single from her her first album, "Animal", which is set to hit stores January 5th. She's the first female to have her first single reach Number 1 since Lady Gaga's "Just Dance" did it in January. The singer is slowly leaking songs from "Animal" on her website as the release date approaches. Click Here to listen.