4KNOTS VIDEO OF THE DAY: RADKEY

Fans of Missouri teen trio Radkey might “Start Freaking Out,” as their high-energy single recommends, when the SXSW sensation hits the stage at the free 4Knots Music Festival at the South Street Seaport on July 12. The three young Radkey brothers, lactose intolerant guitarist and vocalist Dee, video-gaming bassist Isaiah, and beef-jerky-loving drummer Solomon, deliver a solid dose of classic punk rhythm and speedy guitars; they’re just kicking off a tour with popular punk stalwarts Rise Against and L.A. five-piece Touché Amoré through the fall, including a stop at the Best Buy Theater on September 26. They haven’t finished their first album yet — their four-track EP, Devil Fruit, was released last October — but the 4Knots show offers an early chance to see them “melting faces” with such songs as “Little Man,” “Overwhelmed,” and “Red Letter” as well as new tunes they’re recording with Arctic Monkeys producer Ross Orton for their debut album. (You can hear “Feed My Brain” here.) 4Knots also features Mac DeMarco, Those Darlins, Speedy Ortiz, Viet Cong, Nude Beach, Crazy Pills, Juan Wauters, Dead Stars, and headliners Dinosaur Jr.