for his part, michael tilson thomas was himself a classical music prodigy.les, he played piano alongside legends like igor stravinsky and aaron copeland. when he first heard then 17- year-old yuja wang play, he recognized some familiar traits. >> look, there's that expression, it takes one to know one, and there is that certain thing i spotted in her from the beginning of-- ahh... right. and it was remarkable because here was this very young woman playing and she was listening. she was listening to the harmonies and she was playing in a way that was following and sympathetic as well as asserting herself. >> brown: we watched the two rehearse beethoven's piano concerto no. 4 with the san francisco symphony. >> then resolve it. ♪ make sense for you? >> yeah, but it's hard to control the sound. >> i know. playing slow and quiet is the hardest thing for a thoroughbred like you anyway. >> brown: hours later, issues resolved, they performed for a packed house in davies hall. >> we played it three years ago and now we're playing it again and i feel like it's more r