The preludes were perhaps not intended to be played as a group, and may even have been used by him and later pianists as generic preludes to others of his pieces, or even to music by other composers, as Kenneth Hamilton suggests: he has noted a recording by Ferruccio Busoni of 1922, in which the Prelude Op.
Kenneth Hamilton suggests that the preludes may not have been meant as a group but rather as what?
generic preludes to others of his pieces