BC is an oddity: one guy with a guitar that can veer from Jason Mraz to Michael Jackson within a few beats. He assembles tracks on stage by linking bits of voice and percussion like so many tinkertoys. This anticipation to see how it comes together, combined with his natural showmanship makes his live show so fascinating to watch. September 4th marks the release of his latest album, “heART.” BC and Brian Fuente, fellow Nashville resident and former contestant of “The Voice” will be at 12th and Porter this Wednesday, Sept. 4. -Terra James-Jura