Pyotr Ilyich Tchaikovsky was especially taken with Auer's playing. Reviewing an 1874 appearance in Moscow, Tchaikovsky praised Auer's "great expressivity, the thoughtful finesse and poetry of the interpretation." This finesse and poetry came at a tremendous price. Auer suffered as a performer from poorly formed hands. He had to work incessantly, with an iron determination, just to keep his technique in shape. He wrote, "My hands are so weak and their conformation is so poor that when I have not played the violin for several successive days, and then take up the instrument, I feel as if I had altogether lost the facility of playing."