Behind the scenes
Composed by Murray Gold and recorded by Yamit Mamo, "The Stowaway" was the fourth original song commissioned for the revival of Doctor Who, following songs Gold composed for the two previous Christmas specials and Daleks in Manhattan. Mamo appears on camera performing the song in the episode and Gold appears as one of her musicians. The song was released prior to the episode's broadcast on the series 3 soundtrack album. Gold provides backing vocals on the album recording.
A brief instrumental rendition of the theme was included as part of the Voyage of the Damned "Suite" on the series 4 soundtrack album.