Music. Music is an art form, and cultural activity, whose medium is sound.
   General definitions of music include common elements such as pitch, rhythm, dynamics, and the sonic qualities of timbre and texture. Different styles or types of music may emphasize, de-emphasize or omit some of these elements.
   Music is performed with a vast range of instruments and vocal techniques ranging from singing to rapping; there are solely instrumental pieces, solely vocal pieces and pieces that combine singing and instruments. The word derives from Greek.See glossary of musical terminology.
   In its most general form, the activities describing music as an art form or cultural activity include the creation of works of music, the criticism of music, the study of the history of music, and the aesthetic examination of music. Ancient Greek and Indian philosophers defined music in two parts: melodies, as tones ordered horizontally, and harmonies as tones ordered vertically.
   Common sayings such as the harmony of the spheres andit is music to my ears point to the notion that music is often ordered and pleasant to listen to. However, 20th-century composer John Cage thought that any sound can be music, saying, for example, There is no noise, only sound. The creation, performance, significance, and even the definition of music vary according to culture and social context. Indeed, throughout history, some new forms
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