As part of the Hannenheim Edition, the pianist Moritz Ernst also presents, in addition to the anthology of all the surviving piano sonatas of Arnold Schoenberg's master-class pupil, the edition of Hannenheim's two previously known organ works.

The early Phantasie is imbued with a late Romantic harmony interspersed with chromaticisms, which reveal influences of Wagner and Strauss, but also of French organ romanticism. More typical of Hannenheim's personal style is the classical three-movem...