It’s real. In fact, it’s Scarlatti’s Keyboard Sonata in D Minor (Kk. 141).

I cannot believe someone can play at this level at 84 years old (yes, the performer, Martha Argerlich, is 84 in the vid). That is absolutely unreal. It’s actually better than her performances from 30 or more years ago. Wish it were in more than 360p as it’s from only last month.