Don't bridges look like harps sometimes, like massive instruments of giants? That's what inspired Jodi Rose to use contact microphones to capture the sound of a bridge, as you can see in this video.
What we hear is something new, something we didn't hear before, it's a huge structure that seems to come to live and share its feelings with its haunting voice.
In this particular case the sound was combined with a live cinema performance. Read more about Jodi Rose and hear projects at singingbridges.net