This paper explores how leadership and peer relation relate to the propensity of college music departments to develop transformational organizational culture. Our theory of relational leadership and peer relation has initially allowed us to formulate expectations for the affirmative impacts of professional and personal leadership and peer relation on the expansion of transformational culture. The samples are taken from the full-time college professors in Taiwanese music departments. The results demonstrate the significant importance of professional leadership and peer relation to the growth of transformational culture; however, the intimate personal relations fail to make contributions to the prediction. The larger implication is that professionalism in leadership and peer relationships is a major determinant of music department disposition in bolstering transformational organizational culture. (Contains 3 tables and 3 notes.)