Recently, an investment model integrating several interdependence-type variables has been proposed to explain commitment in social and organizational settings. The model includes the components of costs, rewards, investments, and alternatives, and has served well in predicting specific outcomes such as job turnover and romantic commitment. The purpose of the present study was to determine the degree to which the investment model can be extended to a new area—commitment to musical activities—and to assess the extent to which commitment profiles generated by the model vary across musical preference groups. Results from a sample of 87 musical devotees demonstrated that the investment model is a valid means of accounting for commitment to participation in musical activities. In addition, distinctive profiles for each group—classical and nonclassical—were identified.