Work Bitch," the new single by Britney Spears leading up to the rollout of her eighth studio disc, is already available online after being leaked hours before its official launch on Monday.

The song with its powerful electronic style was created by the artist herself together with of the Black Eyed Peas and Sebastian Ingrosso of Swedish House Mafia, as well as Otto Jettman, Ruth-Anne Cunningham and Anthony Preston.

"Work Bitch" recalls in some elements "Scream & Shout," a big international hit on the latest disc, in which Spears took part in the vocals and which topped the charts in several countries.

Spears's eighth disc, still without a title or an official launch date, has a long list of collaborators including William Orbit and singer-composer Sia, and is expected to coincide with the premiere of her Las Vegas show.

The work comes after her 2011 studio disc "Femme Fatale" and songs like "I Wanna Go" and "Till the World Ends," where the artist's drift to electronic sound became apparent, though her new track is even more resoundingly distant from the dance-pop style she introduced in 1999 with "...Baby One More Time." EFE