Thirty-eight year old Rudolf Firkušný (1912-1994) is soloist in this 1950 performance of the first movement of Sonata in C Minor, K. 457, From the LP shown in the video above, issued on the Columbia label in 1951, catalogue number ML 4356. So as to remove all doubt as to the provenance of the recording to which, and the identity of the artist to whom you are listening, I include images from the LP label and slipcase to validate the authenticity of historical performances such as these.