Topic: Special effects
The description for the Steinway D Prepared says:
This is a prepared piano where among other things felt has been wedged between the strings, except for the extreme notes which are out of the cage.
This seem to be achieved by shortening the Impendence, Cutoff and String length.
In this clip, the pianos keys are playing against paper:
https://www.youtube.com/watch?v=9HF6zxKfzKI
This got me was wondering how or would it be possible to add various effects to the sound without the need to alter the pianos? For example effects like: wedges, paper, felt, metal sheets, glass, etc.