Lady GaGa released her latest single 'Judas' four days early after it was leaked on the internet.

The singer's new track - which is the second from her album 'Born This Way' - wasn't due to go on sale until Tuesday (19.04.11) but is now available to download after an unauthorised version surfaced online on Friday (15.04.11).

According to Billboard.com it was leaked after a London radio station broadcast the track that afternoon.

Music bosses instantly shifted the song's premiere date, releasing it on iTunes straight away.

Gaga, 25, promoted the early release on micro-blogging website twitter, urging her fans - whom she calls her "monsters"- to download the track.

She tweeted: "New single Judas! Monsters, thank you for inspiring me to write this song. Blood, sweat + Judas. (sic)"

The star later posted a picture showing artwork for 'Judas' which was created by photographer Nick Knight and depicts her morphing into a motorcycle.

'Born This Way' will be available next month.