TV The BBC's website is full of clips of old shows. Most of them are only a couple of minutes. But sometimes they're many hours of content. Here's an example. It's the Simon Bolivar Orchestra playing Young Person's Guide to the Orchestra. All fifteen minutes of it in a the usual enormous embed:
The actual programme its from or rather was cut from since this is a "web exclusive" is long gone. Yet here this still is. With its very present crowd. I let you know if I see anything else.