Piano is a nice tool, but it kind of imprints a certain harmonic language to it’s users. So while rare I find it harmonically really interesting to look at composers who did not play piano, as then approach to music may be very different. Recently I have been thinking about this particular melodic line here:
Now, this melody is a bit strange. It is very chromatic and actually modulates from F♯ minor over C major to E minor, from where it is imitated by other voices to a counterpoint. For more harmonic context we can look at the third repeat (with then both counterpoints and two whole steps lower):
I tried to reduce this to the harmonic structure (if you an say so, since this was clearly composed in a contrapunctual manner):
and it is ... well, weird (the small notes are suggestions by me). Some parts are totally clear and all, but some parts are ... well, cheeky.
My harmonic interpretation so far would be:
- m1: Tonic is d minor, pretty normal I and then IV7 going into a sixte ajoutée
- m2:
- 1: Here it get’s strange. My interpretation currently is that we interpret the previous IV (g minor) as Eb/D♯ secondary dominant, resolving to G♯ minor as new tonic
- 2: We change to a G♯ diminished 7, which we interpret as ♯II chords of F major
- 3: F major with ♯5. New tonic F major
- 4: F major
- m3:
- 1: Diminished 7 on ♯IV which serves as secondary dominant on VII (E)
- 2: Resolves/Shifts to Diminished 7 on ♯V as secondary dominant on III (A)
- 3: Resolves to VI (d-minor)
- m4,5: Simply shifts to Ab major as new tonic?
- m6: V, interpreted as III in new tonic of C-minor, V7
- m7: I, VV7
- m8: II7, V, I♯6, V7
- m9: I♯, I, V
- m10: I, I♯3 7
This is more or less my current reasoning, although I am not exactly happy with it. Well, starting from measure 5 everything is quite clear, but m2-m4 is really strange to me. My interpretation ... well ... works, but it involves some quite bold modulations. Of course, as I said there is limited sense to analyzing the harmony of such contrapunctal music, but still I want to ask you all what you’d make out of this.


