In the 20th century, Appalachian migrants seeking economic opportunities relocated to southwestern Ohio, bringing their music with them. Between 1947 and 1989, they created an internationally renowned capital for the thriving bluegrass music genre, centered on the industrial region of Cincinnati, Dayton, Hamilton, Middletown and Springfield. Fred Bartenstein and Curtis W. Ellison edit a collection of eyewitness narratives and in-depth analyses that explore southwestern Ohio’s bluegrass musicians, radio broadcasters, recording studios, record labels and performance venues, along with the music’s contributions to religious activities, community development and public education.