Britney had received offers from other film companies, but Weiss says Jive wanted to 'put [its] money where [its] mouth was' and decided to finance Not a Girl on its own. The film's soundtrack will feature a ballad called 'Not a Girl, Not Yet a Woman', which will also appear on Britney's album. Weiss predicts the song, written by Martin, Rami and Dido, will become a megahit on a par with Celine Dion's 'My Heart Will Go On' or Whitney Houston's 'I Will Always Love You'.