Hayworth and Novak give excellent performances of their respective characters but Sinatra is the superstar. Unlike, for example, in "From Here to Eternity", Frank really doesn't have to act in this movie; just be himself. This is what makes it such an enjoyable flick. It's almost a documentary. It's also full of Rodgers and Hart (arranged by another genius, Nelson Riddle), which further propels it to 5 star status. I wish Sinatra had sung more of these American standards (which he owns like no other singer, except, perhaps, Ella) in this movie but this isn't really a musical. It defies categorization. It's just Sinatra between two beautiful bookends and a mid 50s Hollywood urban love story. It is a permanent part of my video library listed under "Ring-a-ding-ding!"