are most teams doing a voice over for their animation, or just music?
You should choose what is best for your animation. Our team is doing voice over to give the viewer a better idea about what is going on. We designed it sort of as a commercial, trying to get viewers excited about our invention.
Voice over is almost essential. It explains whats going on. Make sure the quaility and energy of the voice over is good. Otherwise it can kill a really well done animation
We used a voice over this year and last year we had a voice over with music. The previous three animations were music and my first year it was voice over with music.