This study examined how Mary Priestley musically implemented 15 Analytical Music Therapy (AMT) techniques for exploring conscious material, accessing unconscious material, and strengthening the ego. Using the Priestley archives at Temple University, the author listened to 96 recorded examples of individual AMT sessions with 31 adult clients that were made between the years 1975-1991 to examine and aurally identify the musical phenomena and patterns occurring in the musical implementation of AMT techniques. The results of the study present clinical considerations necessary for applying each AMT technique and the clinical/musical roles of the analytical music therapist. Finally, this study presents distinctions between traditional and contemporary AMT practice and implications for AMT training and supervision. / Music Therapy