Currently working on this keyboard piece, came across something that I think looks like a harmonic sequence.
We are newly in D minor, and the bars in question are labelled 1 and 2 (squint and you'll see them).
I have loosely marked the harmony as V7-I-V-?-landing back on minor i. There is a b flat repeated on each chord (which is never a chord tone- perhaps some sort of pedal point?), and there is a descending chromatic line also circled starting on a G natural (which oddly has a natural sign next to it even though there are no previous g sharps in the piece, or g sharps in the key signature). It ends neatly back on i.
Wondering if anyone can shed any light on this harmonic device? So I can understand it and look out for it in the future!