[[Listen]] [[MusicXML]]
There is really no such thing on the pianoforte as a "pure" single tone. It is an acoustical law that no tone exists by itself, but always generates a whole series of overtones[218] or "upper partials," as they are called, e.g.
[[Listen]] [[MusicXML]]
Even what we call the perfectly consonant chord of C major, e.g.,
[[Listen]] [[MusicXML]] would be slightly qualified and colored by the B-flat, and this effect has actually been utilized by Chopin in the final cadence of his Prelude in F major, No. 23, e.g.
