Progressive Big Band

Originating in the post-swing era experiments of bandleaders like *Stan Kenton*, Progressive Big Band merges the scale and power of the traditional jazz orchestra with compositional techniques drawn from 20th-century Western classical music. The style is defined by its pursuit of compositional artistry over dance-floor function, characterized by complex, often through-composed arrangements, extended harmonies, and the exploration of unconventional time signatures. It prioritizes a concert-hall aesthetic, treating the big band as a vehicle for serious, architecturally complex music. While seldom a commercial force, its innovations expanded the orchestra's vocabulary, influencing subsequent generations of large-ensemble jazz composers and film score arrangers.