Um, I think 3/4 and 4/4 are natural, and the rest aren't. I don't know why they are; they just are. Probably, it's because they are the lowest. 7/4 is a combo of 3/4 and 4/4 eliminating a downbeat. In other words, it's not as simple.
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Feels like I'm fiddling while Rome is burning down.
Think I'll lay my fiddle down, take a rifle from the ground!
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