Composer

A composer is a person who creates musical art, usually in the medium of notation which is then interpreted and performed by musicians. The level of distinction between composers and other musicians also varies, which affects issues such as copyright and the deference given to individual interpretations of a particular piece of music. For example, in the development of European music, the function of composing music initially had no greater importance than the function of performing music. The preservation of individual compositions received little attention, and musicians generally had no qualms about modifying compositions for performance. Over time, however, the written notation of the composer has come to be treated as strict instructions, from which performers should not deviate without good reason. Performers do, however, play the music and interpret it in a way that is all their own. In fact, in the concerto form, the soloist would often compose and perform a cadenza as a way... full article at wikipedia