Martin talks to author Gareth Murphy about his new book Cowboys and Indies: The Epic History of the Record Industry. While music is an integral part of our daily lives, very little is known about the revolutionary men and women on both sides of the Atlantic who founded and shaped this enduring industry. From the invention of the earliest known sound-recording device in 1850s Paris to the CD crash and digital boom today, Murphy takes readers on an immensely entertaining and encyclopedic ride through the many cataclysmic musical, cultural and technological changes that shaped a century and a half of the music business. The interview was recorded on January 19, 2015.