Sweetwater Sessions, a new series at Haymarket, will feature three local bands once a month, with the idea being to disregard genre-focused bills and include different types of music on the same night. For the first installment, New Bravado — a versatile psych-rock band that veers between old-school power riffs and intricate, heavily layered finesse — will perform, as well as Kogan Dumb — a member of the venerable Bird Zoo and solo emcee who utilizes dark production and heavy-hitting lyrics — and Crunchy Groove Machine — a jam band that looks to swirl roots music and take that sound in new directions. Yet another way to discover Louisville music for free.