Leonard Caston, Jr. is an American rhythm and blues songwriter, record producer, pianist and singer. He recorded for both the Chess and Motown labels in the 1960s and 1970s, and co-wrote or co-produced several major hit records, including Mitty Collier's "I Had A Talk With My Man" (1964), The Supremes' "Nathan Jones" (1971), and Eddie Kendricks' "Keep On Truckin'" (1973) and "Boogie Down" (1974).