Confidentiality is an area of professional ethics of concern to all health care professionals. Definitions as well as ethical and legal implications of confidentiality and privileged communication are presented. Potential misuses of confidential information are discussed in light of current trends and court decisions. Recom mendations for music therapists, particularly those in private practice, are given. Confidentiality is an area of professional ethics that is considered important to music therapists. In a recent survey (Maranto, 1981), 50 music therapists were asked to choose correct responses to 56 ethical problem situations, and to rate the importance of each situation on ascale from 1 (Unimportant) to 7 (Extremely Important). The ethical situations concerning confidentiality received the highest ratings of importance in the survey. The issue of confidentiality appears to be important among other health care professionals as well. In 1981,Maranto conducted an item analysis of 36 codes of ethics in the health care professions, including a frequency count of the various statements relating to different ethical issues.Results showed that statements regarding confidentiality were included in 86% of the codes surveyed. Furthermore, statements on confidentiality were included in these codes more often than any other ethical issue. The codesof ethics of both the National Association for Music Therapy, Inc. and the American Association for Music Therapy contain statements concerning confidentiality. The Code of Ethics (1979) of the National Association for Music Therapy, Inc., states: Any confidential information obtained from or about the individual shall not be revealed without the client’s or specified guardian’s permis sion, including casematerial that has not beenadequately disguised for publication, teaching, or other professional use. Adequate security shall