This research develops an integrative model of music piracy, specifying self-control and differential association as antecedents, peer inﬂuence in music downloading/sharing as mediator, and self-construal as moderator. Disentangling peer inﬂuence into two forms—informational inﬂuence and normative inﬂuence—this research examines their differential effects on two aspects of music piracy: unauthorized downloading and unauthorized sharing. The ﬁndings suggest that informational inﬂuence is the key underlying mechanism through which self-control affects unauthorized downloading, whereas the two forms of peer inﬂuence mediate the relationship between differential association and both aspects of music piracy. Furthermore, the relationships among antecedents, mediator, and consequences (i.e., unauthorized downloading and unauthorized sharing) are contingent upon individuals’ self-construal. These ﬁndings yield important implications and intervention programs (e.g., interpersonal skill training, educational extension programs, and artist-student contact points) that can curb music piracy.