Really Useful Engine

Really Useful Engine is a song from the fourth season dedicated to Thomas. An orchestral and shortened version of the song, with the original children's voices and added backup vocals by Steven Page, was used in Thomas and the Magic Railroad. A third version was made, with vocals by Robert Hartshorne and the Kidmore Children's Choir and slightly modified lyrics for The Adventure Begins.

In The Adventures of Thomas, Hartshorne and the Kidmore Children's Choir sang it in the UK version's end credits.