This May and June, sludge-rock innovators the Melvins will visit six cities — Seattle, San Francisco, Austin, Chicago, Boston, and New York City — where the band will play two sets on each of two back-to-back nights (four sets total). Each will be identical: night one will be material from Lysol and Egg Nog before songs from Houdini; night two will be material from Bullhead before Stoner Witch.