Progressive

Progressive music is the name given to a certain approach to musical composition that has been applied to several different music genres

Progressive music is the name given to a certain approach to musical composition that has been applied to several different music genres. One way the term has been applied is to subgenres that have evolved from their root genre by innovating, either through incorporating instruments from other genres or using new techniques within the framework provided by the instrumentation of the root genre to make a new or crossover style. Another is in reference to a gradual build-up of energy within progressive music track or throughout an album.

The description "progressive" was first applied to jazz. The term, coined by Stan Kenton, was in reference to cool jazz tracks that used instrumentation create an almost art rock like sound. The genre is closely related to bebop.