Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

Let me give you an example: At the beginning of the movie Gangs of New York, Priest Vallon tells his son not to wipe the blood of the blade after he's cut himself shaving, saying "The blood stays on the blade". I've watched the movie multiple times, but can never find what the meaning behind that phrase is. Anyone able to shed some light on this?
The answer to this example can be: What's the meaning behind the phrase "The blood stays on the blade"?
Here is why: A person gives a detailed description about a scene from the movie Gangs of New York and asks the meaning of a said phase in the scene. The question is summarized as What's the meaning behind the phrase "The blood stays on the blade"? for easy indexing the next time someone searches for a similar phrase

OK. solve this:
From the Zombieland (2009) score, there is a track "Estasi Dell Anima", from when Tallahassee locks himself in the booth at Pacific Playland to distract all the zombies. Does anyone know, is this piece based on a classical piece, or some other piece? It is a musically gorgeous track, but it is all of 1m54s long. I'd love to get a longer or extended version of this song. Or was it a new piece composed for the movie, and no longer rendition exists?
Answer:
Was the track "Estasi Dell Anima" newly composed for "Zombieland"?