This is what you call your understatement. It's in the percussion family. For all its rhythm, the music suffers no loss of melody. I don't think they give a shit about harmony. I don't think it means anything to them.
Musicians care about harmony.
Coltrane said it. You think about Coltrane playing all that out shit, but you could sing most of his melodies. Because that's the way it relates to its folk roots. It's folk music in a way, it's a combination, to me, of art music and a folk music, and that's the folk part. As you might expect with all that percussion, your fingers and feet will be doing a lot of tapping on any available surface as you listen.