Most breton tunes cannot be played on a piano. Why ? Because they have “commas” (as it is often the case in oriental musiv for example). See the fret setup of a guitar below :
Fret spacing is regular, whereas if you take a look at a turkish saz :
Fret spacing is not regular, which enables to play notes with the so-called “commas”, and that cannot be played on a piano for instance (see this older issue for further details : Bağlama’s pitch). In other words, a third can be slightly higher than the minor, but much lower than the major, which means its pitch is somewhere inbetween…
Ok, now what happens if you play a tune on the turkish saz with a high third degree as we commonly have in breton music, together with a guitar ?? If you play a grid with a usual minor third, it may sound like this :
Well, I think it sounds a little bit weird, or even out of tune since a third with two different pitches gets played simultaneously… And especially, Simone doesn’t like to sing when I play this kind of chords !
So, I made a grid, trying to find “3rdless” chords, in order to avoid this “forbidden third”, this is what it sounds like :
I do think it sounds better, but you may find it’s even worse than in the first attempt ! If so, please let me know ! :))