He also achieved success with songs like "Oh Happy Day" (Hooper's 1953 recording of the song with the Welk orchestra was a top-5 hit for the orchestra), "Ding Dong Daddy" and "Minnie the Mermaid", a duet sung with Jo Ann Castle.
He also achieved success with songs like "Oh Happy Day," "Ding Dong Daddy," and "Minnie the Mermaid," which he performed as a duet with Jo Ann Castle. His 1953 recording of "Oh Happy Day" with the Welk orchestra reached the top five charts.