The Grammy-winning neo-soul singer has been in the studio working with Mark Ronson, producer of her hit sophomore album "Back To Black," an Island Records spokesman confirmed.

"She has been doing some work in the studio, but (the Bond theme) is speculation, basically."

Ronson told BBC 6Music that the pair had been working on a track for the upcoming Bond film "Quantum Of Solace." He told the digital station that there was no official guarantee that the fruits of their recording efforts would be included in the action movie, which is due for a theatrical release in November.

"It would be lovely," added the Island spokesman, "but there's nothing to confirm at this stage."

The theme for the last Bond movie, 2006's "Casino Royale," was sung by former Soundgarden frontman Chris Cornell.