Born in Oradell, NJ in 1921, he began his education as an arranger with Glenn Miller alumnus Bill Finegan. Together, they would sit up all night listening to classical music, especially that of Shostakovich, whose "First Symphony," which premiered in 1937, caught Finegan's attention. From Finegan's teachings, Riddle went on to work as a trombonist and arranger with the Charlie Spivak Orchestra, performed with a Marine Corp Training Band, and also played with the Tommy Dorsey Orchestra.
https://youtu.be/AcJoY4xFXNk?list=RDAcJoY4xFXNk