The singer surprisingly revealed the star of the films, Daniel Craig, “had to approve” the track.
In an interview alongside her brother and co-writer Finneas O’Connell with BBC Breakfast, Billie said: “We’ve been wanting to make a Bond song for years.
“I remember at the beginning of last year we told our whole team that if any Bond things come up we want to be involved if we can possibly be.”
Finneas added: “There are few things as desirable as doing a Bond song and we didn’t take the opportunity lightly.
