DISSONANCE AND CONSONANCE 



77 



A harmonic percept is a duplicate when an original 

 percept is repeated on another tone: such are sol as 

 root, ti as major third, re as pure fifth. This shows 

 that the seven tones and eight harmonic relations of 

 the two harmonic genera, consonance and dissonance, 

 have introduced ^7;^ original harmonic percepts into 

 music. These five are now presented each with the 

 tone that first produced it. 



13 5 7 9 



do — mi — sol — fa — la \ 



Three of these spring from the original consonance 

 (Major Tonic), two from the original dissonance 

 (Major Dominant). The expansion of harmony and 

 tonaHty is due to the repetition of these harmonies and 

 percepts on other tones, a subject to be treated in the 

 chapter on potential harmony. The exact analysis 

 of the above harmonic percepts now confronts us. 

 These five percepts and the seven original tones are 

 all included in the following simple folksong which we 

 will analyze: — 



5 3 



3 5 5 3 



5 9 



i: 



S 



m 



i==F^ 



S 



mi re re mi fa 

 Dominant 



mi fa sol mi 

 Tonic 



re la 



5 3^5333 553 



3 3 



I 



k±=£i 



^ — wl-^ 



sol mi fa sol mi mi mi re re mi fa 

 Tonic Dominant 



-^ -^ -i&- 

 ti ti do 



Tonic 



