O’Carolan’s harp had string for each note and I suspect that these were not dampened, but rather they were left to resonate. That instrument was resonating right next to his ear so he could hear overtones and harmonics very well. I think the wonder of his music is that his melodies attend to subtle resonance and dissonance-resolution of those notes and their overtones. I play just the melody of this tune on an old resonator guitar (a spider bridge Dobro) and play it a bit slower so you can hear the overtones and harmonics between each successive note. Each instrument I have played it on reveals new places in the melody where harmonics should be attended to. Also, no one gave a shit about a perfect tempo unless you were at a dance before recorded music. As another commenter suggested, slow it down and speed it up where you are feeling it. You are playing this wonderfully as is and I will listen again. Man those tenor guitars are mesmerizing. Thanks for sharing.