In his 'Art of Fugue' Bach himself introduced a theme based on the four letters of his name: the notes we know as Bb A C B correspond to the German note names B A C H. Since that time, many composers have expressed their admiration for incomparable master by writing their own pieces of music on this theme.The work based on this theme by Franz Liszt is without any doubt the most important of them all - indeed, it represents a major landmark in the whole of the organ repertoire. It was composed in...