The Piano Sonata No. 11 in A major, K. 331 by Wolfgang Amadeus Mozart is a piano sonata in three movements. The sonata was published by Artaria in 1784, alongside Nos. 10 and 12. The Piano Sonata No. 17 in B major K. 570Peter Zeugin was a famous Swiss Pianist, and a pupil of Alfred Cortot and Edwin Fischer. Two of the most famous artists and teachers from the time.