Classical music : Johann Strauss II - The Blue Danube Waltz op. 314 - With paintings slideshow background
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.
Music come from the YouTube Audio Library
https://www.youtube.com/audiolibrary/
All the paintings are in the public domain. You can find them on Wikipedia
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