Alt-J, or to refer to them by their symbolic proper name, ∆, are out of Leeds, England, but oh so subtly carving out a new home in your subconscious via the American television jackhammer. Whether you know it or not, you’ve probably heard them on Weeds (“Fitzpleasure,” season 8) and Sons of Anarchy (“Tesselate,” season 6). If not, then surely “Buffalo” in Silver Linings Playbook, a song they produced specially for the David O. Russell film. Thom Green, Gus Unger-Hamilton, and Joe Newman make inventive but melodic indie pop kept accessible by their normcore appearance and refusal to be “ridiculous people” (even though they sample Miley Cyrus on their second album, This Is All Yours). But the refusal to act like clowns for publicity purposes is nonetheless refreshing, and their music is entertaining enough

Sun., Nov. 16, 8 p.m., 2014