Harold Mabern: I got my training, what I call, from the university of the streets of Chicago. I hung out, made all the jam sessions;  Frank Strozier,  Booker Little and I spent a lot of time together and we stayed there until ’59. We formed a group with  Walter Perkins called the  MJT+3 [1959-1962], with  Bob Cranshaw, yours truly,  Willie Thomas,  Frank Strozier. They [Walter Perkins and Bob Cranshaw] had two other groups: [unknown music group] with  George Coleman,  Booker Little, [and MJT+3, 1957-1959]  Paul Serrano, and  Muhal Richard Abrams; but the group we had was the most successful one. So we stayed there until ’59, then we left and all headed to New York City.