The girls - Lucy and Charley - are set to release a cover of Turn Me On (Turn Me Out) in September.
They're also working on an album, which will feature original material written by the girls themselves.
"We both write so it's been brilliant to put our own touch on songs," the pair revealed. "Essex them up a bit. The first single is obviously a cover but the album will be original stuff."
Speaking to DigitalSpy this week, the pair added: "What we love is shocking people because people don't think we can sing, our first single is the hardest song we've had to sing and I think it shows we have the vocals."
And the duo admitted they've love to sing their track on the live shows, especially after being booted out in Week One last year.
They said: "We want that to happen, that would top it all off, to come back and perform our single.
"We'd be the first act to go out in the first week and get a deal, we're proud."