He has a degree from the Berklee College of Music and is considered to be a leading teacher and author in the field of jazz improvisation .
Hal Crook ( born 28 July 1950 in Providence , Rhode Island ) is a jazz trombonist .
Hal Crook has a degree from the Berklee College of Music and is considered to be a leading teacher and author in the field of jazz improvisation .
Hal Crook ( born 28 July 1950 in Providence , Rhode Island ) is a jazz trombonist .