The voice behind KUSC's 'Baroque and Beyond' and various Bowl and L.A. Phil shows gets the message out in his youthful and unorthodox style... Brian Lauritzen remembers the first night he visited the Hollywood Bowl as a green twentysomething who'd just moved out from Tennessee... Overall, he's a laid-back evangelist of the classical radio world: He produces a Saturday-morning culture show, "Arts Alive," that looks at such diverse subjects as filmmaker Jonathan Demme on Neil Young or the mess at the Museum of Contemporary Art, and he hosts "Baroque and Beyond" on Sunday mornings as well as numerous broadcasts for...