From Jackie Daly’s recording, Traditional Accordion and Concertina Music from Sliabh Luachra. It’s one of those I could hum along with from hearing it so many times, but had never actually learned to play until now. He plays it in C, along the row from what I can tell based on which notes are especially legato on the recording. I originally started learning across the rows on my “standard” scale, but then decided to go with the C row for kicks. There are some quick bellows changes either way. I wonder if other people in Nashville know this one, and play it in C. . . guess I’ll find out.