Ghost Forest Theremin help!

Hi I am in the process of fabricating a series of proximity sensing sculptures that I hope will be 'played' much like a theremin. The sound emitted by the sculpture's nodes will vary from actual field recordings to sonified data collected about a specific site, a forest in this case, the Copalis Ghost Forest for starters. I'm a bit new but have gone through the starter kit projects with mostly success. Any thoughts on the which components to use for such a project?

Thanks so much! Please help!

Google "Arduino CapSense"

And google "Arduino Theremin"

There are some good examples out there.