It’s nice when an LP’s cover so succinctly summarises what the album holds. Heat and Entropy, the latest LP from experimental Scottish composer Ben Chatwin, has one of those images. The picture in question is of the underside of a squid against a purely black backdrop. It’s crisp, detailed and leaves to the imagination as the mouth, suction cups and moisture of the cephalopod’s underside are prominently visible. It’s a striking and almost hideous vision of the natural world that because of the void-like darkness that surrounds it; it looks as though it would torment you were you in a…