Use conductive thread as a sensor with a Lilypad Arduino board in order to produce sound.
*Take a piece of fabric and sew your conductive thread.
*Connect it to one of the analog pins on your board. I chose the analog pin 2.
*Connect the + side of your buzzer to a digital pin and the - side to the - pin on the board.
(You can sew it to your fabric, but if you just want to experiment I would suggest you used alligator clips).
*I have connected a white LED to light up when you make a sound, but it isn' t necessary. You can connect your LED to any of the digital pins on the board.
*Now plug your circuit on your computer and start programming!!! It' s actually really easy and fun ;D
You can check out the Leah Buechley tutorials:
and this very cool project: