Short but sweet and sounding like a musical smile: this cheerful piece was written by Ludwig van Beethoven, a German composer who changed music forever, writing huge symphonies for massive orchestras and tiny musical gems like this one.  Like the Scott Joplin piece, this was first written for a piano (which you can hear in the clip on this page) but takes on its own character when played by five wind musicians. How does changing the instruments but playing the same notes change this lovely piece?