Claudio Arrau León (Spanish pronunciation: [ˈklau̯ðjo aˈrau̯]; February 6, 1903 – June 9, 1991) was a Chilean pianist known for his interpretations of a vast repertoire spanning the baroque to 20th-centurycomposers, especially Bach, Beethoven, Schubert, Chopin, Schumann, Liszt and Brahms. He is widely considered one of the greatest pianists of the twentieth century. Arrau was a pupil of Martin Krause, who was a student of Franz Liszt.

https://en.wikipedia.org/wiki/Claudio_Arrau