Performance is the physical expression of music. Often, a musical work is performed once its structure and instrumentation are satisfactory to its creators; however, as it gets performed, it can evolve and change.
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It was expected that the performer would know how to benefit tempo changes, accentuation, and http://www.audiosparx.com/ pauses (among other devices) to obtain this "expressive" performance style
- In the 20th century, art rap notation often became enhanced explicit and used a gamut of markings and annotations to indicate to performers how they should one-act or sing the piece.