118 THE NATURE OF MUSIC 



N.B. the regnant harmony is V9 owing to the presence 

 of la which is at once a regnant tone and in cadence 

 and, strange to say, resolves into its own harmony. 

 The ninth is the first harmonic component distin- 

 guished by these pecuHarities, especially that of 

 resolving into its own harmony, and la being the 

 original ninth it was the first tone that appeared in 

 this paradoxical relation. This characteristic insta- 

 bility of la as ninth during the regnancy of V, caused 

 by its position beyond the octave of its root, will be 

 further illustrated as we proceed seriatim to analyze 

 the diatonic bytones of each of the three regnant 

 harmonies under consideration. Let us remember 

 that at present we are dealing exclusively with dia- 

 tonic harmonies as defined a moment ago. 



A, The diatonic bytones of reg. I are ti 3, re 5, 

 fa 7, la 3. During this regnancy these bytones persist 

 each in the harmonic report just given. Even when 

 playing upon the same regnant tone fa and la persist 

 in their respective reports as r and 3 as will be heard 

 in the following fugue-subject of Bach here tran- 

 scribed from Cj^ to C Major: — 



5357531 5737531531 



i 



:it=3^=^=j=^ 





^ 



I V I V I 



Previous examples present a sufficient number of 

 illustrations of these bytones, and what still remains to 

 be said of them will be found in the chapter on cadences. 



B, During the regnancy of V there are but two 

 diatonic bytones, namely, do 1 and mi 3 as follows : — 



