 Konstantin Shcherbakov performing the improvisation on waltzes by Johann Strauss Jr. called The Beautiful Blue Danube, of course. Max Reger wrote that variation. We're going to hear some music of Max Reger himself now. I'm going to take just a moment here to explain what it is we're going to listen to. It's a series of four symphonic poems written in 1913, inspired by four paintings by the Swiss symbolist painter Arnold Birkeland.