The image above shows, from Bach 371 Chorales, No. 2 "Ich dank dir lieber Herre" in A major, measures 11 and 12.
I'm very confused by this part.
1. first red square, Is that chord I or vi56?
If that is I, non chord tone 'F' is becomes a 7th note(G) in the next chord, and the 7th note goes up in the another next chord.
There is a theory that it is possible to ascend by steps when a resolution sound comes out of the bass of a chord with 7 notes, but I don't know if this applies to the Bach choral as well.
if that is vi56
7th note 'E' goes to 'D' but maybe D is a non chord tone in that chord, but I don't know if the 7th will go to a non-chord tone and can be resolved.
2. second red square, that is I46 or maybe vi7 with out the root?
this just can't figure it out anything.. first time i saw this i think maybe this chord is 'iii' but if that iii, can't explain how non chord tone 'A' is resolved. because that's not a suspension or anticipation.
if that is I46, I don't know can come out like that.
and maybe vi7 with out root? i think that's not. but that's all i try.. so i appreciate to if you can help this.