Music is emotional and you may catch a musician in a very unemotional mood or you may not be in the same frame of mind as the musician. So a critic will often say a musician is slipping.

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The dubbing of the music and effects is really incredible today. You're feeling gun shots. I mean it's not the way people say it is but the gunshot sounds real. And cars sound real. Among the many things in the evolution (of movies) is to make the sound in the movie incredible. That's what you feel.