JJ Johnson is regarded by many as the most important and influential trombonist of all time. His sound, phrasing, and harmonic language have sculpted the sound of the modern jazz trombone. The clarity and elegance of Johnson’s playing remain the benchmark. His international career was solidified his status as a consummate musician known for being an all-time great writer and player. Johnson was born and raised in Indianapolis, IN, and he attended Crispus Attucks High School.
Here is an excellent, concise biography by Scott Yanow at All Music.