Page:Letters to a Young Lady (Czerny).djvu/70

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58

ing scheme of intervals is formed from the diatonic scale of C major, it can only be written in this way in all the rest of the major keys; and the key-note of the scale selected must always be taken as the root from which all the intervals must be sought for in ascending.

By way of illustration, I shall give you a similar diagram in A♭ major.

\new Score \relative { \time 1/4 \override Score.TimeSignature #'stencil = ##f \key as \major << { as^\markup { \teeny Unison. } \bar ".." bes^\markup { \teeny Second. } \bar ".." c^\markup { \teeny Third. } \bar ".." des^\markup { \teeny Fourth. } \bar ".." es^\markup { \teeny Fifth. } \bar ".." f^\markup { \teeny Sixth. } \bar ".." g^\markup { \teeny Seventh. } \bar ".." as^\markup { \teeny Octave. } \bar ".." bes^\markup { \teeny Ninth. } \bar ".." c^\markup { \teeny Tenth. } \bar ".." } \\ { as, as as as as as as as as as } >> }

And similarly in all other major keys.

You know, Miss, that every note may be raised or depressed by means of the ♯, ♭, ♮, 𝄪, 𝄫. And as this is naturally possible also with respect to every interval, each of them admits of three, or even four different kinds; and this difference is indicated and determined by the epithets, diminished, minor (or false), major (or perfect), and superfluous, as may be seen in the following table: