Arrangement

An arrangement is an adaptation of a piece of music for another musical application than for which it was originally meant. This includes arrangements for a different instrument, or different instruments (for example an arrangement for piano or flute, or a duet, based on a symphonic piece; or arrangement of instrumental accompaniment for vocal music) and for another musical style (for example adaptation of a classical piece into a more modern style of music). Sometimes an arrangement is called an orchestration.