will.i.am has been recording a second song with Britney Spears.

The Black Eyed Peas star has already laid down one track for her upcoming album 'Femme Fatale' and the pair have been back in the studio this week.

He revealed on his twitter page: "In the studio with @britneyspears today. we recorded another song for #femmefatale. that's 2 bangers (sic)

And it seems Britney is just as pleased with the results of their collaboration, writing in response: "@iamwill We make sweet sweet music. (sic)"

The 'I Gotta Feeling' hitmaker has already boasted that their first song is going a "mega smasher", and he can't wait for Britney's fans to hear it.

In an earlier twitter post, he wrote: "This britney song is so addictive ... I'm in the studio adding finishing touches ..."Uh oh" this one is a "MEGA SMASHER" (sic)"

'Femme Fatale' is set to be released worldwide in March.