 However, the claim that sounds are sensations is unattractive. Good reasons suggest that sounds are public rather than private, even if sounds are not identical with ordinary objects and events such as clothespins and collisions. Suppose I am near the stage in a hall listening to some music, and that I have a headache. It is a confusion to think you could feel my headache, but I assume you hear the sounds I hear. Suppose I move to the back of the hall, and the headache then gets better. My experience of the sounds of the music differs once I am at the back of the room, and my experience of the headache differs. The sound of the music itself need not differ (the musicians could make the same sounds), but the headache itself changes. The sounds can continue once I leave the room, but if I stop experiencing the headache, it is gone. Moreover, the notion of an unfelt headache is puzzling, but it makes good sense to say that a tree makes a sound when it falls in the woods without being heard. Finally, tinnitus, or ringing of the ears, is an illusory or hallucinatory experience as of a sound, but received wisdom maintains that there are no illusory headaches.