Sharples assisted
Gene Rodemich in scoring cartoons for the
Van Beuren Studios in 1932 after
Walter Winchell praised his work with Lopez in a column, which was read by studio owner
Amadee Van Beuren. Sharples stayed at Van Beuren until 1936, during which time he composed music for two
Frank Buck films,
Wild Cargo (1934) and
Fang and Claw (1935). With Van Beuren winding down production, Sharples joined the
Max Fleischer studio in New York as musical director. In 1938, Sharples composed "
It's A Hap-Hap-Happy Day" for Fleischer's full-length animated musical production of ''
Gulliver's Travels. Paramount Pictures released the film to cinemas in the United States on December 22, 1939.'' Several of the songs from that production were used throughout subsequent years in Paramount shorts, with the most notable being "It's A Hap-Hap-Happy Day". The song was a hit in the UK in 1940 during the Battle of Britain, having been played heavily on the BBC radio. Sharples worked at Fleischer Studios in Miami, Florida, where he became the leader of a band that played in nightclubs in Miami Beach. In 1942, Paramount moved Fleischer Studios to New York City and renamed it Famous Studios. In 1945, Sharples replaced
Sammy Timberg as the Eastern musical director for Paramount Studios, writing music for their cartoons, newsreels, and short subjects. The studio's productions included three series started by the Fleischers—
Popeye the Sailor,
Superman, and
Screen Songs—as well as
Little Audrey,
Little Lulu,
Casper the Friendly Ghost,
Honey Halfwitch,
Herman and Katnip,
Baby Huey, and the anthology
Noveltoons series. He joined
ASCAP in 1948. In 1958, Sharples teamed with
Joe Oriolo for musical production on the
Felix the Cat television series. That series made extensive use of stock music composed for the Paramount shorts as well as Sharples' distinctive theme song. ==Later works==