Raised on the sounds of Johnny Cash and Roy Acuff, it’s no wonder that James McMurtry grew to become an Americana radio chart-topper. This week, the Texas-bred singer, songwriter and guitarist brings his uncompromising style to the unveiling of the new Lagunitas Brewing Co. venue dubbed the LaguMini Amphitheaterette. Adjoining the brewery’s tap room, the new theater is set to be reserved for only the most skilled performers; 11 albums and 22 years into his career, McMurtry fits that bill. See him at the new venue on Monday, Sept. 19, at the LaguMini Amphitheater. 1280 N. McDowell Blvd., Petaluma. 4pm. Free; tickets required from KRSH-FM (Note: now sold out.—Ed.). 707.778.8776.