About 200 or so smiling faces gathered in the Berkeley Hills (officially the community of Kensington, Calif.) on a beautiful June 15 afternoon for a musical benefit featuring the acoustic David Nelson Band, Steve Poltz, and Ragged Charms (a one-time ensemble featuring Dan “Lebo” Lebowitz, three fellows from Hot Buttered Rum, Stephanie Salva, and Wally Ingram).