Annie’s contribution to the Apollo 13 soundtrack includes ethereal vocal performances on “The Dark Side of the Moon” and the film’s end titles. Collaborating with composer James Horner, Annie’s wordless vocals underscore key emotional moments in the film, adding a haunting human element to the space drama. The video segments featuring her music are often paired with visuals of the moon and spacecraft, enhancing the sense of isolation and wonder. Her involvement added a unique sonic texture to one of the 1990s’ most acclaimed soundtracks.