It was the booming psychedelic music movement that first called Boz Scaggs to San Francisco, in 1967. But music isn't the only passion Scaggs found in the Bay Area. He and his wife, Dominique, have 2.5 acres planted to vines on their Mount Veeder property in Napa Valley. Under their label, Scaggs Vineyards, the couple produces about 400 cases annually of a Grenache rosé and a Rhône-style red blend called Montage. Scaggs talked with Wine Spectator's Esther Mobley about his love for wine, his accidental initiation into grapegrowing and his commitment to organic viticulture.