I've been meaning to reply to these comments and am finally doing so...six weeks later! Better late than never?

I really like this idea of using the bridge as a counterpoint. Fast vs slow, adding in spoken lines. (I know that dialogue in vids generates strong feelings, but I don't mind it, esp. if the vid is set to a source few people are familiar with.) To date, I've used bridges literally - they're a way to get the viewer from one part of the story to the next. It's interesting to think how they might serve less literal, more thematic purposes.