Opening animation music is the conclusion of "Travel On" originally downloaded as an MP3 file from the MP3.com site for "Earth Songs" with permission obtained from Art Putnam to use the music in this animation via an email message on October 26, 2001. To hear the full work, you are encouraged to visit mp3.com and listen to "Travel On" courtesy of Earth Songs with Flutist Arthur Putnam
Concluding animation music is a subset of "Travelling" originally downloaded as an MP3 file from the MP3.com site for "Oxygenial" with permission obtained from mp3.com; this song can be found on Oxygenial's CD "Solar Winds."