The story behind this song comes from a documentary film called 'The Last Man On The Moon', where astronaut Eugene Cernan travels to the moon as part of Apollo 17. At the time, he travelled further than anyone has ever been, and has still to this day travelled faster than anyone has ever been as part of the Apollo 10 mission. He promised his young daughter Tracy that he'd bring her back a moonbeam and wrote her initials in the lunar dust. I was so inspired by the magic of this story, that this song came very quickly and easily. Written from the perspective of Tracy about her dad, wondering if he was going to make it home safe.