Tangerine Dream had recorded another piece that did not appear on the official soundtrack, but did appear in the film. It has only been found in bootlegs, in MP3 form at some P2P sites, and also on some streaming services, particularly Rdio. Within both mediums, the song was given either the title "Prologue" or "Once Long Ago". This music can be heard in the intro to the American film release and is also heard in one of the early scenes between Jack and Lilly. It is recognized for its distinct and memorable flute melody. Additionally, some of this melody can be heard at the end of the song, "Loved by the Sun," as it fades out. It can be theorized that the band originally intended that outro to be the "epilogue," reprising the opening melody as a means of continuity - to end the story in the place where it began.