It's taken about a month for this to go viral, but it was worth the wait.
Vanderbilt University student Michael Pollack went to see Billy Joel give a lecture/concert this winter when, during a Q&A session, he made the ballsiest request ever:
Could he accompany his hero on "New York State of Mind"?
Joel, awesomely, obliged ... and it was incredible:
You can see why the music legend gave him major props afterward. Pollack later talked about how the moment in January came about. He tells InsideVandy: