Barre Controller
Peter Blasser envisioned a the barre controller for his amazing series of eurorack modules. It is a very simple device consisting of a piezo wired to an 8th inch jack, attached to a bendable surface. To realize this design I 3d printed them. I have sold a few on a cook-to-order basis. Some may be available on my reverb page: https://reverb.com/shop/grahams-gear-bazaar-63