He got his nickname from the nonsense syllables "doodle-oo-doo-doo"
that he sang with the guitar intro to his 1965 number-one hit song
"Girl on the Billboard". His other hits included "Belles of Southern
Bell", "Be Glad", "Good Time Charlie's", "Looking at the World through
a Windshield", "Philadelphia Fillies", and "Women Do Funny Things to
Me".