The Schönberg Center in Austria uploaded fragments of Arnold Schönberg's piano concerto performed by Mitsuko Uchida and a mixture of her talk and performance of the concerto to YouTube. I did not know Uchida had played Schönberg's concerto, but now I know there is a CD (Universal, UCCP1016). The talk is in English and I have not yet understood whole, but I could know how Uchida grasped Schönberg's music, and I was very interested.