As a lifelong classical music fanatic, I can agree with that article. A string quartet by Beethoven or late Schubert, or one of many symphonies by Beethoven, Schubert, Brahms, Dvorak and Rachmaninoff, give my mind clarity.
What?! No Bach?
https://www.youtube.com/watch?v=FHNLdHe8uxY
XAVER VARNUS PLAYS BACH’S TOCCATA & FUGUE IN THE BERLINER DOM