Of course it’s not a hornpipe. Is it a Dans Plinn?
This tune is a Breton gavotte !
You could name it "Breton gavotte" in order to be a little more precise, or even "ton doubl gavotte" indeed, (= last part of the dance). This one used to be played not by the usual couple biniou-bombarde, but by chromatic accordion player Yves Menez, who may have composed it in the 1930’s or 1940’s. In the original tune in A minor, you have to play F# and G# in the first part. F and G are natural in the second and the third parts of the tune.
Breton Gavotte, X:2
Breton Gavotte, X:3
second tune of the set
I wonder what it sounds like in Brittany as I have yet to find a version from it "proper" habitat.
Re: Breton Gavotte
It’s a "ton tripl" in fact (three distinct parts). Apart from the traditional mainstream… Because of the composer’s personality : Yves Menez had elaborated a very personal style on accordion, mixing "musette style" and breton tradition. Then somes call it "swing gavotte". Listen to Gilles Le Bigot’s version ("Empreintes" : his first recording).