Charles Louis Eugčne Koechlin (1867-1950) studied with Massenet and Fauré and founded the Société Musicale Indépendante together with Ravel, Schmitt, Caplet and Huré. Poulenc and Sauguet were two of his students. Koechlin's organ composition is published in a two-volume edition for the first time. That this is a very important oeuvre becomes clear from the fact that the premičres were performed by important organists: Olivier Messiaen played the Chorale op. 90 and Maurice Duruflé the first Sonatina. An interesting edition for concerts, competitions and liturgy.