Reference:
A. R. Jensenius, R. Koehly, and M. M. Wanderley. Building low-cost music controllers. In R. Kronland-Martinet, T. Voinier, and S. Ystad, editors, CMMR 2005, LNCS 3902, pages 123–129. Berlin Heidelberg: Springer-Verlag, 2006. (PDF from Springer)

Abstract:
This paper presents our work on building low-cost music controllers intended for educational and creative use. The main idea was to build an electronic music controller, including sensors and a sensor interface, on a “10 euro” budget. We have experimented with turning commercially available USB game controllers into generic sensor interfaces, and making sensors from cheap conductive materials such as latex, ink, porous materials, and video tape. Our prototype controller, the CheapStick, is comparable to interfaces built with commercially available sensors and interfaces, but at a fraction of the price.

Bibdesk:

@incollection{Jensenius:2006a,
	Abstract = {This paper presents our work on building low-cost music controllers intended
                    for educational and creative use. The main idea was to build an electronic
                    music controller, including sensors and a sensor interface, on a ``10 euro''
                    budget. We have experimented with turning commercially available USB game
                    controllers into generic sensor interfaces, and making sensors from cheap
                    conductive materials such as latex, ink, porous materials, and video tape.
                    Our prototype controller, the CheapStick, is comparable to interfaces built
                    with commercially available sensors and interfaces, but at a fraction of the
                    price. },
	Author = {Jensenius, Alexander Refsum and Koehly, Rodolphe and Wanderley, Marcelo M.},
	Booktitle = {CMMR 2005, LNCS 3902},
	Editor = {Kronland-Martinet, R. and Voinier, T. and Ystad, S.},
	Pages = {123--129},
	Publisher = {Berlin Heidelberg: Springer-Verlag},
	Title = {Building Low-Cost Music Controllers},
	Year = {2006}}