The dB’s—the brilliant guitar-pop band that came out of the southeast along with R.E.M. but never enjoyed anything like the other band’s commercial success—have released a killer new song, available as a free download. Titled “Revolution of the Mind,” it’s the hardest-rocking thing they’ve recorded in decades, with extra guitar from Ira Kaplan of Yo La Tengo. An album, Falling Off the Sky, and a long-awaited reunion tour of the band’s original lineup are scheduled for early next year.