Listen to Natural & Soulful Blues: Dennis Rag online. Natural & Soulful Blues: Dennis Rag is an English language song and is sung by Champion Jack Dupree. Natural & Soulful Blues: Dennis Rag, from the album Two Classic Albums Plus 40s & 50s Singles (Blues From The Gutter / Natural & Soulful Blues) (Digitally Remastered), was released in the year 2010. The duration of the song is 3:34. Download English songs online from JioSaavn.