III - A practice of analysis in the tonal harmonic discourse from Bach to Wagner
TWO CATEGORIES OF CONSTANTS
Drawing on experience "in the field" with this outline for harmonic
analysis and having examined, here and there, the corpus of works from
the repertoire Bach-Wagner, I was lead to identify two broad categories
of constants: on one hand, formulas, on the other, sequences.
1. DEFINITION OF A FORMULA
Let us recall that the harmonic formula corresponds to a fragment of
the discourse with a high rate of recurrence in the tonal repertoire, a
fragment consisting of at least three functions (explicit or implicit
in the case of a final unresolved dominant) which result
in the unequivocal designation of a principal or secondary tonic.