I am on the roster as creating "an anecdotal soundscape of Catherine Street, a process which would start with collecting sounds in situ and end with a finished composition for playback." While that may very well happen, I will also be installing a site-specific audio augmentation for a particular location on the street. You will get to hear this throughout the day Saturday (10am-5pm) all going well!
I'm heading out now to test some playback locations... I'll update this entry with more details (see the comments) when I get back.