The theme (or whatever you want to call it) was Godzilla and I'm not really sure if they did a good job emanating this theme; they were fireworks that were synchronized with intense music. Really, it's all up to your imagination.
My own Celebration of Light playlist:
The Whitest Boy Alive - Fireworks
Animal Collective - Fireworks
Infadels - Godzilla
Blue Oyster Cult - Godzilla
The Vines - Outtathaway! <-- Because getting out of English Bay was a challenge