I'm really glad you added this video, which explained why I heard the beautiful ending of the 12/12/12 concert for Hurricane Sandy where Billy Joel sang "Gloria" and the rhythm kept playing so beautifully.
So, this is the deep background. I knew I loved Billy Joel (back in 1977), and this helps explain why. Also, the Jones park underpass reference was priceless, helping anyone (in NYC) understand the roots.
PS: Technical note: it is hard as heck to logon to make a comment. Please fix it. But your clip was / is beautiful. Thanks.