Leroy Anderson (1908-1975) was one of the pre-eminent composers of "classical pops" music. Though best known for "Sleigh Ride" (originally a pure instrumental) and "Syncopated Clock" (used as theme music for the CBS "Late Show" and Jeopardy), he wrote many others just as deserving of attention which are still widely played in pops concerts.
Note that although his first name is spelled normally, it seems to be universally pronounced le-ROY. For more information, check out the official web page at http://www.leroy-anderson.com/ .
Leroy Anderson ( lə-ROY); June 29, 1908 – May 18, 1975) was an American composer of short, light concert pieces, many of which were introduced by the Boston Pops Orchestra under the direction of Arthur Fiedler. John Williams described him as "one of the great American masters of light orchestral music."