[quote=Raxacoricofallapatorius]
Tentative interest.Question: Are we allowed to use more than one song?Suggestion: Though the characters are initially based off of one song they may acquire/invent new songs that cause changes in their character's personality and/or appearance.
[/quote]

Answer: No. You can have multiple characters based off of different songs, though.

Gonna have to shoot you down on the suggestion there, (sorry!) but only because that's not how the characters work. They are all artificial, and cannot be changed by music. The scientists who created them would need to change their appearance, but they can't do it much. Personality changes can come from experiences and experiences only.