Bach ,variations Goldberg ... for strings trio version Sitkovetsky
Bach, art of the fugue .. Neville Marriner version
What else?
We cannot listen to something without a deep complex content this amount of time ... Few pop tunes will make us becoming mas everyday ...
Then taste is not enough ... There is much more other music i loved too but nothing compared to these 2 pieces in deep inextinguishable meanings ...
The other possibility are all Beethoven quartets ...Talich version ...
Nothing simplistic melodically or rythmically and harmonically ...
All Scriabin pianos will do too ...😊