I agree. This doesn't seem to pass the smell test.
Actually, some people have no talent for memorizing music. My husband cannot remember a single song, not even Happy Birthday or the ABC song. He can remember numbers, however, and do other things. I can hear a song only once and sing it back, and still remember it years later.
Great story... but I had the very same thought. Common sense would have one wanting to learn it ASAP after release.
LLS