On January 1, 1929 he made his debut playing his Piano Concerto No 1 with the Philadelphia Orchestra conducted by Ossip Gabrilowitsch.
Through the intervention of the nuncio to Bavaria, Archbishop Eugenio Pacelli (later Pope Pius XII), Gabrilowitsch was freed from jail, and then he headed to Zürich and the United States.
After Maier and Pattison heard a two-piano performance by Harold Bauer (1973-1951) and Ossip Gabrilowitsch (1878–1936), they began to play together.
After Maier and Pattison heard a two-piano performance by Harold Bauer (1873–1951) and Ossip Gabrilowitsch (1878–1936), they began to play together.