London's Mouth Ulcers make music for vampires to dance to. Atmospheric guitars, tribal percussion and cavernous baritone vocals channel the darkness of The Cure and Bauhaus through something urgent and fresh. Championed by John Robb as one of a new generation reshaping dark post-punk, they made their live debut at The Hague's Grauzone festival in February 2026 - and promptly had a packed room nodding along.