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Music is difficult to define, as it is difficult to extricate a clinical definition of the word from the inherent value judgments that accompany it. In everyday usage, the word "music" is understood to be sounds which are organized to enthrall and move the listener, in contrast to "noise" which is unorganized sound producing no particular effect. Inevitably, some music (particularly some types of modern music) is described as "noise" or "not music" by listeners who do not enjoy or understand it.  What appears as music to one person may be interpreted as noise to another, and vice versa, as interpretation of sounds, whether organised or disorganised, dissonant or harmonious, may arouse different sorts of feelings in a listener.

Music is difficult to define, as it is difficult to extricate a clinical definition of the word from the inherent value judgments that accompany it. In everyday usage, the word "music" is understood to be sounds which are organized to enthrall and move the listener, in contrast to "noise" which is unorganized sound producing no particular effect. Inevitably, some music (particularly some types of modern music) is described as "noise" or "not music" by listeners who do not enjoy or understand it.  What appears as music to one person may be interpreted as noise to another, and vice versa, as interpretation of sounds, whether organised or disorganised, dissonant or harmonious, may arouse different sorts of feelings in a listener.

Common definitions include "organized sound" or "art in the medium of sound".

Common definitions therefore include "organized sound" or "art in the medium of sound". But even these do not encompass some avant-garde works, such as John Cage's ''4'33'''', which contains no notes and instead comprises whatever background sounds happen to occur during a performance.  

Note that music is ''not'' limited to such sounds that a human being might produce by fashioning an instrument for the making of a simplified or otherwise organized sound and then "playing" said instrument. The chirping of birds and certain insects may properly be called music, especially if the sound produced is particularly pleasant to the listener. Furthermore, some of the most sophisticated music attempts to imitate the sounds made by birds, insects, and other animals.

Note that music is ''not'' limited to such sounds that a human being might produce by fashioning an instrument for the making of a simplified or otherwise organized sound and then "playing" said instrument. The chirping of birds and certain insects may properly be called music, especially if the sound produced is particularly pleasant to the listener. Furthermore, some of the most sophisticated music attempts to imitate the sounds made by birds, insects, and other animals.