Despite the serious obstacles that stand in the way of discussing such questions as what constitutes a piece of music, the papers by Miss Carpenter and Professor Crocker deal sensitively with the issue and make useful and important observations. My comments are intended to assist in clarifying and furthering these discussions. Let me proceed by identifying and then applying two demands that this sort of question calls forth, the first conceptual and the second substantive. There is opportunity here to develop only some conceptual suggestions, and I shall merely be able to indicate the direction in which a substantive contribution might proceed.