I've recently been listening to the Perahia/Lupu recording of the Mozart Fantasia for Mechanical Organ in F Minor, K608. I've had the CD for years, but shamefully only ever listened to the well-known major works which precede K608 - the great D Major Sonata for Two Pianos (K448) and the Schubert F Minor Fantasia for Four Hands. A Mechanica Organ, incidentally, seems to be more or less what you might imagine: a pipe organ which is "played" by a barrel with pins. K608 was transcribed for two pianos by Busoni, and it is this version - with a few "restored" bars - that Perahia and Lupu play. Over the past few weeks, it has rapidly become one of my favourite pieces. Far more than a mere curiosity, it strikes me that can stake a place among the very best of Mozart's compositions.
Mozart also wrote another piece for Mechanical Organ - the Adagio and Allegro in F Minor, K594. In addition, he also wrote a number of pieces for the organ itself - works ranging from early fugues to assorted pieces written right at the end of his life.
My question, then. Does anyone know if these organ pieces have been trascribed and recorded for piano? If so, can someone point me in the direction of an available recording?