Rhythm and blues / Peter Grendysa -- New York and New Jersey / Wayne Jancik -- Philadelphia ; Detroit / Dan Nooger -- Chicago / Robert Pruter -- The South : Tennessee, Alabama, Georgia, Virginia, Carolinas / Bill Dahl -- The South : Louisiana, Texas, Florida, Mississippi / Jeff Hannusch -- West Coast / Randal C. Hill -- Great Britain and the European continent ; Funk and later trends / Geoff Brown