If you see something, say something

Dvorak, Bartok and Kodaly recorded the folk songs of rural peasants on wax cylinders and based their compositions on what they gathered.

Steve Reich used tape clips of people speaking about issues of his time -- the Cuban Missile Crisis and the Harlem Riots -- and altered the sound clips to make his recorded pieces "It's Gonna Rain" and "Come Out."

As for me, I'm currently writing a concerto for viola, guitar, and transit watch announcement.