There are limestone caves that seem to have no end. You venture first into their known passages, then detect a hitherto undiscovered opening, which again reveals a whole new network of caves. In time you make a new map including all known explorations, and settle down, content with what you have. But another person comes along, looking for new openings where you perceived none, and in time enlarges your map, relegating your considerable findings into the large body of the past. An era lies just behind us when the dogma of the exhaustion of musical invention was current.” —Ernst Bacon on authorship, but really on expansion of human engagement, from Notes on the Piano

“Twelve Variations On A Chorale,” J.S. Bach: Var. 9 – Largo (Performed by Simone Dinnerstein)