[uf]

> It doesn't sound wrong to hear tritones, or minor seconds, or diminished and altered triads, or stacked fourths.

That depends on the composer. I'm doing Hollander currently. I got to sing a hell lot of tritoni and chromatic progressions. That's pretty difficult.

But it doesn't sound that way at all. If you hear it "from the outside" you just think "yeah, that's how it's supposed to be.

I also did a contemporary Serbian opera a couple of years back than. Serbian folk music as I experienced it always sounds a litte "wrong but cool". Was near impossible to sing, but to the listener: Yeah, sounds good.