Do you understand Wagner's Ring Cycle?  Have you got the time to find out?  If not then here's a synopsis, according to Classic fm:

http://www.classicfm.com/composers/wagner/guides/stages-watching-ring-cycle/#m1gBA8hLkelpwQHR.97

And here's the Guardian's take, given in a two and a half minute video:

http://www.theguardian.com/culture/australia-culture-blog/video/2013/sep/18/wagners-ring-cycle-2-mins-video



https://www.youtube.com/watch?v=_HtiAGe4V2s