Wilfred Jackson (January 24 1906-August 7 1988) was an American animator, arranger, composer and director best known for his work on the "Mickey Mouse" and "Silly Symphonies" series of cartoons from The Walt Disney Company. Wikipedia
The definitive Wikipedia entry for Wilfred Jackson. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Wilfred_Jackson