artist nat king cole peak billboard position 16 in 1952 words by sammy cahn and music by nicholas brodszky title song sung by mario lanza in the film also starring doretta morrow and james whitmore lanza charted his single at 7 in 1952 because you re mine the brightest star i see looks down my love and envies me because you re mine because you re mine because you re mine the breeze that hurries by becomes a melody and why because you re mine because you re mine i only know for as long as i may live i ll only live for the kiss that you alone may give me and when we kiss that isn t thunder dear it s only my poor heart you hear and its applause because you re mine instrumental interlude i only know for as long as i may live i ll only live for the kiss that you alone may give me and when we kiss that isn t thunder dear it s only my poor heart you hear and its applause because you re mine