[A]fter several appearances on television variety shows, Mr. Petrillo moved to Los Angeles, where he teamed up with Duke Mitchell, a singer who sang in the smooth-baritone style of Frankie Laine, Vaughn Monroe — and Dean Martin. They put together a nightclub act based primarily on their impersonations of the comedy team Martin and Lewis.
Based on that, the movie producer Jack Broder cast them in a low-budget comedy, “Bela Lugosi Meets a Brooklyn Gorilla,” opposite Mr. Lugosi. In the movie they played nightclub performers, stranded on a tropical island, who act very much like Martin and Lewis....
... Mr. Lewis’s eldest son, Gary, said: "When Sammy and the other guy played in that gorilla movie, I remember my dad and Dean saying, 'We got to sue these guys — this is no good.'"
See for yourself:
Bonus: Gary Lewis plays drums and sings.