[QUOTE=yabob]
Those are the principal chords for A, so
try A, if you are going to play in “1st position” or “straight harp”.
D, if you are going to play 2nd position, so called “cross harp”, which might be better suited if the melody is actually in D, in spite of the chords (whichever Greek mode that is, I can never remember them).
[/QUOTE]
I agree. A or D looks like it would work well with this song.