I was in a coma for almost two weeks, 14 months ago.
Sometimes with a head injury to the right side of the brain we have to relearn with enthusiasm as, in the case of music perhaps. It can take a couple of months to enjoy music again.
In an example of a dominant-hemisphere stroke, it can leave a "persistent alteration in auditory experience." Some people experience an intense, altered state of "transformation" and emotional response to music can be lost following certain strokes. It could take a year or two for recovery in some cases.
In the case with amusia---the loss (or congenital lack) of ability to make structural judgments about music, some people rendered virtually amusic by brain injuries were nonetheless still able to enjoy music and to make emotional judgements about it.
Having been in a coma from meningitis I was concerned about my emotional state when listening to Rachmaninov preludes and other music I always relaxed with. If anything, I've noticed I "break-down" with emotion moved to the state of tears where before, it was just a stage production in my mind. I've always had the "gift of choreography with modern jazz dancing." (including foreign to me, pieces of great music to accompany a hallucination)