Soprano: C-B-A-A-G (descending)

Bass: A-B-C (ascending), then down to D and up to G.

Can you even add tenor and alto without breaking the rules of harmony? It seems like it is impossible.

So what is the best way to harmonize this? I did try it with 3 voices but ended up with B-D-B on the second beat. This is not correct as a sixth interval is good, but we have a G chord without G and with two thirds. You don't want to end up with B-E-B since you'll end up with a fifth.

  • 1
    C-B-A-A-G ascending would be a very strange line. Do you mean descending? – PiedPiper Jun 2 at 21:51
  • Yes. I did a mistake – Hank Jun 2 at 21:57
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    In the future, please edit you posts if a mistake is noticed. – leftaroundabout Jun 2 at 22:24
  • "Harmony" is a very subjective term these days. Could you please be more specific as to what harmony rules you are referring to? – Pyromonk Jun 3 at 11:25
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    I would recommend adding a child's "Wow!", which for some reason harmonizes with anything, even silence – Cort Ammon Jun 3 at 15:30

I think B-D-B on the second beat shouldn't be disregarded too readily, but the implied harmony is rather E⁷ than G. This could be brought out even more by going full in with the leading tone:

%%score T1 Tn B
V:T1           clef=treble
V:Tn           clef=treble-8
V:B            clef=bass
% 1
[V:T1] c  B  A A  | G4
[V:Tn] E  ^G A c  | B4
[V:B]  A,,B,,C,D,,| G,,4
  • Shouldn't your middle voice be an octave higher? Otherwise you start out with a 2nd inversion chord. – Scott Wallace Jun 6 at 10:33
  • 1
    @ScottWallace yes, or rather, the bass should be an octave lower. Edited. Octave positions in ABC are always a trial&error for me... – leftaroundabout Jun 6 at 10:56

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