Jack Leroy Petersen is an American jazz guitarist, pianist, composer, arranger, music publisher, music clinician, and renowned pioneer in jazz education who revolutionized guitar education. He was a pedagogical architect for jazz guitar and jazz improvisation at three institutions of higher learning: First full-time jazz guitar teacher at the Berklee College of Music (1962-65 - Inaugural Chair, Guitar Department) Longstanding and influential jazz guitar artist in residence at theUniversity of North Texas College of Music (1976-88 - Resident Artist, Jazz Guitar, Improv). Joining his close colleague, Rich Matteson, who was recruited from North Texas to build a new program at the University of North Florida focusing on jazz, Petersen built a jazz guitar program (1988-1995; fully retiring 1999 - Resident Artist and Associate Professor).