This Belgrade-based family act operates under an ambitious code of simplicity: Zoran Starcevic and his two sons, Nikola and Zeljko, seem to have made it their project to condense the entire Balkan musical tradition into a repertoire that can be played by six hands on three guitars. All classically trained and all exuding an audible affection for rock, blues, pop, and jazz–particularly the hot jazz of Reinhardt and Grappelli–the Starcevic boys take a microcosmic approach to their original compositions as well. Each track on their two self-released albums (the latest is Water-Mill) is airtight, with a lush and dazzling orchestral quality that belies its instrumentation. If you think you hear a scrap of Greekish melody or a Transylvanianesque trill, you’re probably right–countless such ideas get developed like patterns in a silk weave, followed to a satisfying resolution, and then left behind for the next odd rhythm or jaunty whirl. See also Tuesday. a 9 PM, Lakeshore Theater, 3175 N. Broadway, 773-276-3600 or 866-468-3401, $15. A