Kenneth Lorin Darby （May 13, 1909 – January 24, 1992） was an American composer, vocal arranger, lyricist, and conductor. His film scores were recognized with three Academy Awards and one Grammy Award. He provided vocals for the Munchkinland mayor in The Wizard of Oz （1939）， who was portrayed in the film by Charlie Becker. Darby is also notable as the author of The Brownstone House of Nero Wolfe （1983）， a biography of the home of Rex Stout's fictional detective.