"In the composition courses I teach, we're dealing with a body of knowledge that dates back a couple of centuries, so I try to show the connection to more recent compositions. 'Over the Rainbow,' for example, fits into an eighteeth-century European structure almost perfectly. After we analyze it in class, I make the point that it's one of the most commercially successful pieces of songcraft that has ever been created. We start talking about why that's true, and that its elements, in terms of organization and melody, are also true for a Beatles tune or a piece by Bach. Those all have universal elements of construction that are effective and timeless."