From what I've read, musical memory is quite an interesting phenomenon, especially for those who are absurdly skilled at it. Like some of the composers of old who could listen to like a 30 minute piece once, and then play it back nearly note for note right afterwards.
Music and the mind are two things that may never be understood fully, and to me they are much more influential and important to life than religion will ever be. And much more mysterious and intriguing.