Mazurkas constitute a distinctive part of the traditional dance music of County Donegal, Ireland. As a couple’s dance, it is no longer popular. The Polish dance entered [Ireland] in the 1840’s. Unlike the Polish mazurek, which may have an accent on the second or third beat of a bar, the Irish mazurka (masúrca in the Irish language) is consistently accented on the second beat, giving it a unique feel. – https://en.wikipedia.org/wiki/Mazurka
2. Audio File, Learner’s Arrangement:
Listen to this audio file of Sonny Brogan’s Mazurka, Learner’s Arrangement at a slow tempo with a metronome beat included.