The organ, because of the full tone and sometimes massive sound, as in, for example, Toccata and Fugue in D minor, and, in addition, the use of the feet with the pedalboard, presents a particular challenge in piano transcription.
The Tausig transcription of Bach's Toccata and Fugue in D minor (BWV 565) ( score) is well known and sometimes still performed, but the Busoni version ( score) over time has proved more popular.