The Sublime Artistry of Mieczysław Horszowski

The slow movement -- Adagio sostenuto -- of Beethoven's Piano Sonata no. 29 in B-flat major opus 106 ("Hammerklavier"), played by Mieczysław Horszowski (1892-1993).
The whole recording of the Sonata is already uploaded by gullivior, but I wanted to present this magical performance of the "most magnificent monologue Beethoven ever wrote" (Kempff) in one single video without interruption.
The recording was made around 1950.
Paintings by Rembrandt (1606-1669).