I collect musical flash mobs. Links, that is, especially ones with real music and preferably ones with good kid-watching opportunities. Maybe you will enjoy some of them too. Here are a few to start. Some of these (the first one, for example) appear in the message as normal text links (click on the blue text), and others appear as windows to click in. I don't know why. I wanted them all to be normal textual links. Can't use full screen in the click-the-window ones. I'm going to experiment.
Aha, solved it for some but not all.
Good music, incredibly talented kids. I especially like the little girl with the big drum.
I like the way they started this one.
Really good kid-watching in this one.
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