The Most Comprehensive Discography of Jamaican Records Ever Published. Roots Knotty Roots, The Collector’s Guide to Jamaican Music is Compiled & Edited by Michael Turner & Robert Schoenfeld. It covers the period from the mid 1950’s through the late 1980’s, including the earliest releases on 78 rpm in the pre-Ska era. The styles included are Calypso, Mento, Blues, Gospel, Pop, Ska, Rocksteady and Reggae. The data includes: Artist & Title, Jamaican Record Label & Matrix Number Plus UK Label and Number, Producer and Release Date. It is sorted alphabetically by Artist – From the Abyssinians to Tapper Zukie.A total of 400 pages and over 29,000 records indexed.