The Blue Danube is a waltz by the Austrian composer Johann Strauss II, composed in 1866. It has been one of the most consistently popular pieces of music in the classical repertoire. The sentimental Viennese connotations of the piece have made it into a sort of unofficial Austrian national anthem. It is a traditional encore piece at the annual Vienna New Year's Concert. The Vienna Philharmonic (in German: Wiener Philharmoniker) is an orchestra in Austria, regularly considered one of the finest in the world. Its home base is the Musikverein. The members of the orchestra are chosen from the Orchestra of the Vienna State Opera. This process is a long one, with each musician having to prove his or her capability for a minimum of three years' playing for the Opera and Ballet. Once this is achieved the musician can then ask the Board of the Wiener Philharmoniker to consider an application for a position in the Vienna Philharmonic.