Playing perhaps the most difficult piano piece: Franz Liszt's Mephisto Waltz. She's been playing mostly Mozart lately, this is a complete surprise. She lets the opening bars fade away, a novel concept. She's opening for Brett and Eddy the TwoSet Violins, she's been their piano accompanist for most of their tours. Yuja Wang hasn't recorded Mephisto yet.
Beethoven broke down musical convention from his 2nd Symphony onward. Joseph Haydn, one of his teachers, considered him too radical for his own good. He threw the minuet in the garbage and replaced it with the scherzo. To fit the scale of his 9th, Ludwig Van wrote his most monstrous scherzo ever.