Thanks for your kind comments on the series. The inspiration simply came from the phrase "string driven thing" which was actually an old folk group here in Canada. The original concept was to have the models hooked up to frames with gears and whatnot but that's a project for another day.
This was a group shoot with several models, and two makeup artists, we do them about 6-8 times a year just for fun so everyone contributes.
The model whose expression you found so strong was at her very first photo shoot.