Roots of Rhythm - From the Birth of the Blues to the Sound of Soul. International Masters Publishers 16 CDs, each with a listener's guide booklet. The CD's are in mint condition.The "Roots of Rhythm" series is a CD collection published (2000) by International Masters Publishers (IMP) through Warner Special Music. It was a limited edition series of over thirty R&B, Blues, Soul, and Gospel compilations, each with a hard cover book detailing artists and songs. The CDs were themed around different musical eras and featured classic songs.