Listen to Britney Spears new single "Till The World Ends" in full

The clip of Britney Spears new single "Till The World Ends" made its way online yesterday, now its here in full.  The uptempo track was produced by Dr. Luke and Max Martin, and written by Ke$ha. The song will be released as the official 2nd single on March 14th.

When I found out that Ke$ha wrote the song, I was hoping that it wouldn't sound Ke$ha-like, but it does.  It sounds a lot like "We R Who We R" but with different lyrics.  But either way, I'm sure it will be another hit for her.