From LivingPianos.

https://livingpianos.com/the-secret-to-being-relaxed-playing-the-piano/

Welcome to LivingPianos.com. I’m Robert Estrin. Today we’re going to uncover a powerful secret that can transform the way you approach your piano playing—how to truly relax at the piano. To demonstrate, we’ll take a look at Chopin’s Waltz in A-flat major, Op. 34 No. 1. But before jumping into the music, let’s lay a foundation with some essential principles.