Keith Knudsen, a drummer for the Doobie Brothers since 1974, died of pneumonia Tuesday. He was 56. Knudsen, who lived in Sonoma County's wine country, had been hospitalized for more than a month. He died at Kentfield Rehabilitation Hospital at about 12:30 p.m., according to the band's longtime manager Bruce Cohn. "I just saw him Sunday, just before the Super Bowl," Cohn said. "He was in good spirits. He was weak, but he was OK." Knudsen, who said he began drumming in eighth grade, joined the classic rock band in 1974 after he met Cohn, who told him the Doobies...
