Saint-Saëns - Six études pour la main gauche seule, op. 135 - 5. Elegie
Opal genuinely liked to be on the bench with me when I played the piano. She was not especially prone to singing along; she just liked being near. It seemed to calm her down, and no matter how agitated the music, she would chill out.
She was also capable of trenchant musical criticism. Years ago, I was learning Beethoven's "Waldstein" sonata, a monument of the piano repertoire. It took me a long time to learn each movement, and then put them all together. The first time I played the whole thing all the way through, when I finished, I looked down at her, she looked up at me, and then she barfed on the piano bench.