I have the hobby of playing the bass guitar since 4-5 months, and for deeper knowledge of music I'm studying harmony. I have no formal education on music so please be patient. I've choosen Autumn Leaves as chord progression to harmonize and while writing the voice leading I've developed some doubts about the nature of chords and their naming. More or less this would be the general chord progression (with some modification as the C7 and Fmaj7).
Cmin7 C7 | Fmaj7 F7 | Bbmaj7 | Ebmaj7 | Amin7b5 | D7 | Gmin |
Thing is that when I try to make the voice leading be as smooth as possible from F7 to Bbmaj7 I'm left with a D A# F A in place of the latter.
First of all I couldn't name this chord because it's not a direct inversion of Bbmaj7. Moreover, this situation happened again with other chords (for instance D A# D# G on Ebmaj7) while trying to apply the less movement possibile to all the voices.
D A# F A seems to have no name related to Bbmaj7, and with the notes arranged in that order am I losing the feeling and the nature of Bbmaj7, maybe also its function in the progression?