Since Bach's Trio Sonatas, this form of playing with 2 obbligato parts and pedal has been among the most important and elaborate tasks of every organist, the art of polyphonic playing. Jean Guillou has transferred this principle into the language of the 20th century and 'modernized' the old idea. The result is a charming work with clear lines and exciting rhythmic constellations. A rewarding piece for concerts and music lessons.