Above image is 'Bach 371 Chorales No5 An Wasserflüssen Babylon' in G major
1. The first red box
I think I saw the rule not to overtake other voices. second measure in the first red box the bass overtakes the tenor (B above G), then the tenor goes below the bass (B under C.)
Can voice come out like this? I'm not exactly sure about this.
2. second red box
beat 1, in last measure in the image i think that chord is i(Am) or maybe it can be V continuation from the previous chord
but if that chord is i, non-chord tone 'B' is can't explain.
B is going to G# by skip in next chord.. and B is not skip or step from previous chord.
is not kind Escape tone or suspension. what kind non-chord is that?
or maybe if that chord is 'V',
non-chord tone A and C is can't explain too. I thought of Anticipation at first, but I know that Anticipation cannot come out of strong beat.
and The movement of G#, the 7th note of the i7, is also strange. G# going to up.. I have seen the theory that if there is a resolution note in the bass of the 7th chord, it can be resolved upwards, but I don't know if this applies here as well.