From the Super Mario Wiki
Richard Yearwood is a Canadian voice actor who got incorporated with the Mario series by voicing Donkey Kong in the Donkey Kong Country TV series. He was born in Toronto and his family moved to Los Angeles when he was at a young age. He provided the speaking voice of DK for the entire series as well as his singing voice in "Cranky's Tickle Tonic" (the first recorded episode). All other songs featuring DK were performed by Sterling Jarvis.