Sinatra sings of " That Old Devil Moon."  Burton Lane and E.Y.Harburg wrote the song for Finians Rainbow, a 1947 show dealing with Irish mysticism and racial relations ( quite an unusual combination of subjct matters). The 1967 film starred Fred Astaire and Petula Clark and was the first feature film directed by Francis Ford Coppola before his Godfather Sagas. 

 https://youtu.be/2RLN7WNhiL4