YouTube is a wonderful resource for information. Like everything on the internet, be careful. But there are many gems to be found.
I was trying to explain the driving force behind New Wave music to my older children. The following two videos provided enough of an explanation. The first is from Emerson Lake and Palmer. It opens with a virtuoso piano solo by Keith Emerson. The second is from a German New Wave band that features a keyboard solo of sorts (starting at 1:40). Simply state that New Wave was a rebellion against the sometimes over-the-top style of many 70's rock groups and then watch the videos. Enough said.
note: By the way, I don't think Emerson was over-the-top. In fact, he was right on the mark.