Monte's first big hit came in 1954, with the release of his version of "Darktown Strutters' Ball". In 1962, Monte released his first million-seller song, "Pepino the Italian Mouse", which was awarded a gold disc. Co-written by Ray Allen and Wandra Merrell and sung alternately in English and a pastiche of Calabrese, "Pepino the Italian Mouse" tells the humorous tale of a mischievous mouse who lives within the walls of a man's home and who pesters him by eating his cheese, drinking his wine and frightening his girlfriend. Arranged by Joe Reisman, who was Monte's longtime collaborator, the single is credited to Don Costa Productions. "Pepino" peaked at number five on Billboard's Hot 100 in mid-January and fared even better in certain markets, including Monte's native New York City, where the single spent two weeks at number one on WABC at the end of December.