One evening during the 1950s at the 500 Club in Atlantic City, DeWitt entertained with the Rat Pack (Frank Sinatra, Dean Martin, Sammy Davis Jr.).
Originally produced by Harry Salter, Name That Tune ran from 1953 to 1959 on NBC and CBS in prime time.
CBS dropped the series in the wake of the quiz scandals, even though Name That Tune was not implicated as much as Twenty One or The $64,000 Question.
He spent the rest of the 1960s playing club dates in New York City, Miami Beach, and the Catskills (the Borscht Belt).
DeWitt came out of retirement in 1974, appearing with Dustin Hoffman in the film Lenny, which was nominated for the Academy Award for Best Picture, Best Director, Best Actor, and Best Actress.