• I notate notes in different octaves as C1 C2 etc.
• I notate notes played at the same time in parentheses. So, (C1 D1) plays C and D simultaneously.

§ The bass arpeggio line

• (a) (E1E2) B1 (G1E2) B1
• (b) (D1D2) B1 (G1G2) B1
• (c) (D1D2) B1 (F#1D2) B1
• (d) (D1D2) A1 (F#1D2) A1

§ Interpretation

• If we grab the notes, we see that it's:
• (a) E-G-B: Major
• (b) D-G-B: 1st note changed ( E to D). 1st inversion of major G-B-D. Ambiguous in tonality,
• (c) D-F#-B: 2nd note chanted ( G to F#). 2nd inversion of B-D-F# minor. Minor.
• (d) D-F#-A: 3rd note chanted ( B to A). Major. Back to happy!

§ Key ideas

• Change one note at a time.
• Vary moods: major to ambiguous to minor/
• Use no inversion on chord [0 ], 1st inversion on chord [1 ], 2nd inversion on chord [2 ], and no inversion (3rd inversion) on chord [3 ]?
• Many thanks to GodotMisogi for the help in figuring this stuff out, he's a much better musician than I ever will be!