This appears on track 7 "Aidan" on Magnificent Seven by Blazin’ Fiddles, as the second tune in the set. I’m going to guess at Aidan O’Rourke as the composer, as the last tune in the set is by him, the first tune is apparently named after his fiddle teacher, and the middle two tunes (this one included) sound quite like he wrote them 🙂
I think the B part is right. 7 bars, three of them 3/4 - that’s where the beats seem to fall on the recording, though please do correct me if the bar lines seem wrong to you!
Here it is in pure ABC without the [M:X/4] in the B part - I only added that in for the sheet music, once it’s up I’ll update the ABC to this cleaner form.