<a href="https://esselfortium.bandcamp.com/album/sol-hemochroma-ost-piaculum-arcana">Sol Hemochroma OST: Piaculum Arcana by Sarah Mancuso</a> Piaculum Arcana (2018) Piaculum Arcana is the complete soundtrack to Sol Hemochroma, and the hazy sound of a summer drifting away.