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Moar accoardion.
From one of my favorite (and definitely most interesting) bands, here is some metal grind polka with clear operatic and eastern European folk influence.
3/4 time FTW!
Even if the vocals are 'not for you' the rest of the song is incredibly interesting (to me).
If this is even a little interesting to you, check out one of their albums:
https://youtu.be/KNJ0B5uU1QQ