I am not knocking your version; everyone has their preferences. Fullness can be lost on tablet and computer speakers. I've witnessed Norbert play it many times by himself on midi accordion with superb orchestral emulation. My late friend specialized in Viennese music, which when done true to form, doesn't lend itself to much improvisation. Norbert was well known and sought after for it.

The Blue Danube was known to be his favorite song by family, friends, and fans. My respect for and memory of him preclude me from publicly performing it though I have been asked. So no one will hear me play it, which I consider a personal and honorable decision.

I posted the song for all to enjoy.
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The older I get, the better I was..