Stuart Chalmers's recordings that feature the swarmandal instrument are his best, even with the songs that don't have it! This one is not an exception and it's one of his darkest releases yet. 2017 self-released CD.
PS. Stuart has made a new recording called The Heart Of Instinct (his two previous The Heart... installations were peak releases) and he's looking for a label to put it out. If you have any info or offers, contact him through his bandcamp or whatever. It sounds like a great recording and yes it has swarmandal! You can hear it here.