Williams Syndrome is discussed in the (fantastic!) book by Oliver Sacks, "Musicophelia". It is often associated with hypermusicality, and the chapter on it is super interesting.
I spoke with one person with WS recently, very musically minded. I haven't recognized what the syndrome was at the time, but I remembered that it was some textbook case of genetic disorder. As adults I think they're aware to be gullible and might take "too much precautions" when it comes to crime in a city so they might bother the police a bit too much.