Barenreiter Urtext BA8465 - Léon Boëllmann Complete Organ Works Volume IV. Arrangements for Organ and Harmonium. This new volume contains those of Boëllmann’s works that were transcribed for organ and harmonium by his contemporaries, as well as works by composers of the time which were arranged by Boëllmann. The edition includes a detailed foreword (Fr/Eng/Ger) with advice on performance practice and facsimile pages of the manuscript, as well as a critical commentary (Fr/Eng/Ger).