it's not an issue of brass or no brass - it's folk music or not folk music

guitars are used to play folk music but that doesn't make Led Zeppelin a folk band

of course brass can be used to play folk music but that doesn't make the performance of unusual suspects on the night folk music - to me it was some sort of fusion of a style that I personally found distinctly unappealing - despite the occasional thread of folk from some sections of the band

if we want to discuss what is folk music and what isn't we could get really boring