Singing in the Rain in a Clockwork Orange

This scene in the film of Singing in the Rain, though highly twisted and controversial, proves many points.
In this scene, Alex sings and dances with singing in the rain while beating a husband and raping his wife. The use of art is what Alex and the others use to detach themselves from the violent acts done. With Alex using Singing in the Rain, the scene takes a turn, which is the fact he is so oblivious yet so involved in his actions makes this scene horrific. Alex is able to distance himself from the horrors he is doing rather than realizing the suffering he is putting onto his victims. The use of irony is used because this is a happy song with such a violent act being done. The louder he sings and the more into the song he gets, where the more Alex beats and hurts the couple. 
Though the scene is very violent and hard to watch, without the song this would not be the same. It is interesting to see how different songs, whether good or bad, can be placed into a movie and completely give it a different meaning.
https://www.youtube.com/watch?v=SWvWyYz9ttk