For example... a fugue is a piece of music, more complicated than a canon (which is a more complicated version of a round). It uses imitative counterpoint, which means that every time a new voice comes in it imitates the theme. But what I did not know is that when a new voice comes in the fugue, it changes key. Yep. Complicated. But, I managed. Here it is.
Darn, it didn't work. :(
