The first one (“One Tradition – Many Interpretations: A Comparison of the Editorial Policies and Practices of the Bach-Editions by Dupré, Vierne and Widor/Schweitzer.”) is a comparative study of the fascinating Bach editions by French/Alsatian organists Dupré, Vierne and Widor/Schweitzer, all three of them published in the first part of the twentieth century. In addition to providing valuable information about the Bach reception in the French (organ-) world, the prefaces and/or annotated scores are also first-rate examples of French performance practice rules which can be applied to other (contemporary) music as well.
The second one (“'How should I play it?' - Franz Liszt's Multifaceted Approach towards the Art of Arranging for the Piano and the Organ.”) discusses and compares F. Liszt's evolving concepts of arrangements for keyboard instruments:
1) Academic 'exercises' in the faithful translation of the original text to another instrument;
2) Arrangements which explore the full range of possibilities offered by contemporary instruments;
3) Virtuosic show-pieces designated for the grand public.