All summer, Long Meadow Ranch has been hosting bluegrass-fed musicians in Napa Valley. This weekend, the ranch offers its biggest lineup of the season–literally. The LMR All-Star Big Band assembles 20 of the most accomplished musicians playing a set of jazz classics and contemporary selections to raise funds for the Timothy Hall Foundation. Founded in 1996, the nonprofit fosters school gardens and innovative curriculum for grades K through 12, and this concert goes a long way to helping the foundation build stewardship in students. The band plays on Sunday, Oct. 2, at the Farmstead restaurant at Long Meadow Ranch, 738 Main St., St. Helena. 3:30pm. $50–$60. 707.963.4555.