WNYC: "Three pioneers of sample-based music talk about the risks and rewards of making new music from old material. In the 1980s, Steven Stein broke ground in sampling and beat-making under the name Steinski. In the mid-'90s, DJ Shadow released "Entroducing," an album made up entirely of samples. And these days, the sample-mad artist known as Girl Talk is sailing the "mash-up" concept into uncharted waters." Listen here