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If in a game of word association I say “Thomas Adès” you are likely to respond “composer,” or perhaps “conductor,” which is how we tend to think about Thomas Adès, forgetting what a great pianist and teacher he is. Listen to this fantastic lesson and to the reckless virtuosity with which he plays some of the trickiest passages of what is by no means an easy piece. Incidentally, I replaced someone in this masterclass, and when I walked up to T.A. he had no idea what I was going to play. You may want to skip my performance of the piece and go directly to the lesson, at 13:30. You can find a better performance of La valse, in part owing to this lesson, at    • Ariel Lanyi plays Ravel La valse  .
And here is Ravel's other masterpiece, Gaspard de la nuit, played at a recital in London:    • Ariel Lanyi plays Ravel’s Gaspard de ...  
Recorded at the Jerusalem Music Center.
La valse: 00:10
Lesson: 13:30