Singing pig created with an Arduino and a soft circuit.

When the pig is on and there aren’t any wigs on its head, nothing happens beyond the pulsating eyes. When a wig is snapped onto it, the pig sings the song associated with that wig: a black wig sings Bad Romance by Lady Gaga; a beehive sings Tik Tok by Ke$ha; and a mohawk sings Superbass by Nicky Minaj.

Tutorial Here: http://blog.theleadingzero.com/2012/01/soft-circuit-singing-pig-with-wigs-part-1-overview