related musical forms?

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I'm working to remember and relearn all the drumming techniques that were once at my command. To this end, I'm listening to a wide range of music. Yesterday, while I focused on the heavy thrash metal songs, I had an epiphany about how closely this style is to another form that is completely unrelated. If you take a song from, say, Metallica, throw in a tuba, an accordion, and a voice that didn't sound like someone gargling moist phlegm, you would have a polka tune! Granted, the words wouldn't be as uplifting as you'd expect but the fast paced beat is certainly there. Just an observation. I don't expect Metallica to be releasing an album of "by golly", "you betcha'" polka tunes any time soon ....