My cousin Pauline came to visit, and Ming and I went with her to the Morgan Library and Museum last night. It is free on Friday nights, and since we only live 5 minutes away, we plan on going again! We saw some outstanding exhibits. Ming really liked the Mesopotamian seals; we wondered if my cousin Jack (who did his PhD on that era) had gotten a chance to see them.
I was amazed at some of the drawings they had, as well as some of the musical manuscripts that they had on display. Unfortunately, we weren't allowed to see the performance hall. Here is an article and picture of the Morgan Library and Museum's hall from the NY Times.
Pauline has her own blog, so I'm sure she will have interesting things to say about her visit.
Jack has a blog too, so maybe I can search his blog about what he has seen in NYC.