John Henderson’s prize-winning 2005 print edition of the Directory of Composers for Organ is now available as a mobile app to download for both Apple and Android devices. The directory began its life in print in 1996, as a project to provide information especially about the more obscure composers of organ music that we come across in anthologies and recordings.  'This directory was not compiled specifically for the absolute beginner, nor for the professional organist or indeed for the musicologist', says John in his preface to this original edition. 'It is aimed at those, like myself, who are amateur…