Britney Spears' club-friendly new single, "Till the World Ends," hit the web on March 3, a week before it was rumored to debut on radio waves next week.

Britney has been posting 20-second previews of new songs from her upcoming album, Femme Fatale, which will drop on  March 29.  Hours after "Till the World Ends" leaked, she wrote on her Twitter page:

"Looks like the cat's out of the bag..."

The album's first single, "Hold It Against Me," which leaked in January but officially dropped January 10, has reached number one in seven countries, including the US, Canada, and Belgium

listen to the new single below:

Do you like it?