Herbert Hazelman is best known for his 42-year tenure as the director of the Greensboro (Grimsley) North Carolina Senior High School Bands (Greensboro Senior High School became Grimsley High School in 1963). In 1925, Greensboro schools' music supervisor, Glenn Gildersleeve, appointed the World War I Army Band clarinetist H. Grady Miller to organize an instrumental music program at Greensboro High School. Miller was elevated to music supervisor in 1926, the same year that Earl Slocum joined the faculty to create an orchestral program. The Great Depression forced the curtailment of the Greensboro music program in 1933, however, the band carried on informally under the direction of English teacher Edward Tannenbaum. In 1936 Herbert Hazelman was appointed as the sole instrumental music teaching force for the Greensboro schools. By 1963 the music faculty had grown to 12 full-time and 2 part-time instrumental music teachers, all under Hazelman's supervision.