"That's Amore" is a 1953 song by composer Harry Warren and lyricist Jack Brooks. It became a major hit and signature song for Dean Martin in 1953. Amore (pronounced [aˈmoːre]) means "love" in Italian.
In the text of the popular song "Mambo Italiano" written by Bob Merrill in 1954 we can find a lot of references to Italian language like "mozzarella", "tarantella", "baccalà" eccetera.