Cliff Edwards

Clifton A. Edwards (June 14, 1895 – July 17, 1971), also known as "Ukelele Ike", was an American singer and voice actor who enjoyed considerable popularity in the 1920s and early 1930s, specializing in jazzy renditions of pop standards and novelty tunes. He had a number-one hit with "Singin' in the Rain" in 1929. He also did voices for animated cartoons later in his career, and is best known as the voice of Jiminy Cricket in Walt Disney's Pinocchio (1940).

source: Wikipedia