Founded in 2011, the Milk Carton Kids continue the fine American folk tradition of blending vocal harmonies and superb musicianship. Their 2013 album, The Ash & Clay, garnered the group a Grammy nomination for Best Folk Album. The band’s most recent album, I Only See the Moon, features Simon & Garfunkel-like vocals and adds to their terrific catalog. The group comes to the Grog Shop in Cleveland Heights tonight at 8:30. Charlie Hickey opens the show.