This is strange--I've had a fair amount of anesthesia, (for completely legitimate and official reasons), and it is to that I attribute my loss of ability to connect names with music. I used to be one of these annoying people who can identify anything, and interfere with the pleasure of people listening with them to tell them the name, who wrote it, and who is playing. Now, I can recognize music, but I generally can't identify it. So...I don't know. (I am a better writer since being put under all those times--or I think I am, which is about as good).