The Etude magazine, February 1929, p. 86

Transposition

By MARGARET GARDNER

    TRANSPOSITION simply means a change of tonality. The pupil will find an apt comparison for this by going from one room to another and describing what he sees that is different in the two rooms. He will tell you first of all that there are different chairs, pictures and curtains, and that even the wallpaper is not the same—which all means that there is simply a change in furnishings. Next he will point out that the walls—that is, the fundamental structures of both rooms—are the same.
    Transposing is like going from one room to another. The sharps and flats in the new key are the furnishings. The melody and rythm are the walls.

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