Panning for music gold: The Catchers, by Xan Brooks, reviewed

They were known as song catchers: New York-based chancers with recording equipment packed in the back of the van, heading south in search of hill country music that could make the record company (and, relatively, the recorder) rich. The singer would get a flat fee of $30. Among themselves, over a beer, the catchers called it panning for gold, diving for pearls, trapping fireflies in a jar.