"A&R Pioneers offers the first comprehensive account of the diverse group of men and women who pioneered artists-and-repertoire (A&R) work in the early US recording industry. In the process, they helped create much of what we now think of as American roots music. Resourceful, innovative, and, at times, shockingly unscrupulous, they scouted and signed many of the singers and musicians who came to define American roots music between the two world wars....