The Bards of Ur

From publisher blurb: Bards of Ur is a Fifth Edition adventure for mid-level players that was voted to be massed released by the patrons of Genius Loci Games Patreon Program. The Bards of Ur are the biggest troupe in the land. Their strange black-and-white make, their leather, spiked clothing, and strange heavy music is all the rage in every town they pass through. However, their music is the key to breaking the chains to a Demon Lord who has been imprisioned for a thousand years.