BloodyMaryNeeder

There is a specific music playing when Johnny meets Gilda in the casino in the last scene of the film. I don't know a lot about music, it sounds like a beautiful orchestra. I've searched online but can find nothing on it. Anyway to get that song? Or at least the name of the song? Would love to gift it to a friend, she would get the shock of her life to hear that music filling her house! Please help! They didn't put out soundtracks in 1946 :-(