I dig the bluegrass tuba.

But in other news, I tend to go with what the words are doing, rather than the music... so a lot of REM I think of as folk, and a lot of Gilbert & Sullivan, and so on. Moody Blues, Yes, anyone who tells stories in song, even if the accompanying music isn't what would be called a ballad or a folk song. So I guess I'm an includer...what I think of is songs that "folks" can sing, I guess, even if some of us might have trouble with the Nightmare pattersong.