This is just one of those funny little threads to stimulate the brain.  Similar to the hide-and-seek thread, this is an amusing way to develop characters. Think about a band.  A musical band.  What role do you see your characters filling if they decided to form a musical group?  Here are some of mine.
Lyna: Drummer.  She's energetic, loud, and pretty stable.  She keeps people going.
Melany: Keyboard.  She's versatile, in the background, and holds things together.
Guilo:  Bassist. A bit secretive, but complementary to the lead's style.
Kaida: Secondary Guitar.  The one who plays all the interesting little notes that are subtle but give things a unique flare.
Tanner: The lead.  Center of attention, the one we'll notice.  He doesn't always write the music, but we'll see him playing it even if it means a diversion.
Timothy: The trumpet.  He doesn't get to play often, but he does so with gusto.
I only used human characters but you can do whatever you want with yours. 

 *sits back and waits for more wackiness*