Start off with the current stuff:
Band: Dianna Kross
Song: Martwe żubry w Bieszczadach
A little bit of juicy metal core:
Band: Gucio
Song: Aristocrats
Band: Gucio
Song: Nevím
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Here are some death metal shades:
Band: Dizorderz
Song: Labirynth
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A taste of an atmospheric fusion of weird sounds:
Band: Dizorderz
Song: War
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Alternative funky/jazzy thingy:
Band: Die Witzelsuchts
Song: Dedication
Band: Die Witzelsuchts
Song: Who Tought You
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Thrash of the late 80s:
Band: Terminal Disease
Song: Outrageously Wicked
Band: Terminal Disease
Song: War Machine
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Last but not least – voices from the mental hospital:
Song: Czarna Krowa, with Billy reciting the poem in Polish :)