In 2017, Hanzhi Wang took first prize at the Young Concert Artists International Auditions and joined the 58-year-old organization’s roster of superstars in waiting as its first-ever accordionist. A year later, Wang made her debut on the Naxos label with a bewitching program of fairy tale-tinged contemporary Danish accordion music under the title “On the Path to H. C. Andersen.” And now, this budding Marta Argerich of the squeezebox turns to the Mount Everest originally published as “Keyboard Exercise, Consisting of an ARIA with Diverse Variations for Harpsichord with Two Manuals. Composed for Connoisseurs, for the Refreshment of Their Spirits, by Johann Sebastian Bach, Composer for the Royal Court of Poland and the Electoral Court of Saxony, Kapellmeister and Director of Choral Music in Leipzig. Nuremberg, Balthasar Schmid, Publisher.” Go. —Matthew Gurewitsch