Dixieland, an early style of Jazz that was developed in New Orleans, is the earliest style of Jazz music. The style combined earlier brass band marches, French Quadrilles, ragtime and blues with collective, polyphonic improvisation. While instrumentation and size of bands can be very flexible, the "standard" band consists of a "front line" of trumpet (or cornet), trombone, and clarinet, with a "rhythm section" of at least two of the following instruments: guitar or banjo, string bass or tuba, piano, and drums.