Pablo Casals (Catalan, 1876–1973). From Wikipedia: He is generally regarded as the pre-eminent cellist of the first half of the 20th century, and one of the greatest cellists of all time. He made many recordings throughout his career, of solo, chamber, and orchestral music, also as conductor, but he is perhaps best remembered for the recordings of the Bach Cello Suites he made from 1936 to 1939.
Eduardo Vernazza (Uruguayan, 1910–1991) recorded his impressions of the world’s great musicians, singers and dancers in brilliant, deft sketches made during live performance. He developed some of sketches from pencil to lithograph with even greater intensity of bravura, calligraphic line. The lithographic sketches offered here were made in the 1930s and early 40s.