Johann Strauss Jr. – The Blue Danube Waltz (An der schönen, blauen Donau – Walzer Op. 314)
From Wikipedia:
The Blue Danube is the common English title of An der schönen blauen Donau, Op. 314 (German for «By the Beautiful Blue Danube»), a waltz by the Austrian composer Johann Strauss II, composed in 1866. Originally performed on 15 February 1867 at a concert of the Wiener Männergesangsverein (Vienna Men’s Choral Association), it has been one of the most consistently popular pieces of music in the classical repertoire. Its initial performance was only a mild success, however, and Strauss is reputed to have said, «The devil take the waltz, my only regret is for the coda—I wish that had been a success!»
Link to download music: https://www.youtube.com/audiolibrary_download?vid=52e7bb555549f5ca
