I've tried written a little chorale in four parts using minor harmony (Bb minor).
Established that for sure I have done several harmonic errors in terms of parts motion in the sense of traditional harmony, I have some troubles understanding some degrees which I intuitively assigned to some chords that I wrote (which correspond to the highlighted parts).
Basically I started with the melody and I decided to keep it without doing any further modifications. So I harmonized keeping in mind the chords I wanted to use for each section by completing the harmony and also choosing some inversions for smooth bass movements.
QUESTION: Is it possible to MIX the harmonic possibilities (triads at this level) given by harmonic/melodic/natural minor together freely? Because I've done that depending on the melody note.
The highlighted notes.. they are not present in the harmonic possibilities notes of Bb minor, So I considered them as chromaticisms.. And I intuitively harmonized them using diminished chords.. Is this a common behavior? And if yes, why? Also, since diminished triads I used to harmonize them are not available in Bb minor, which degrees should assign to them?