Complex sentence: In 1938, for the first time ever, Arrau gave the complete Beethoven sonata and concerto cycles in Mexico City, he had held it several times in his lifetime, includes in New York and London.
Split into simpler sentences: In 1938, for the first time ever, Arrau gave the complete Beethoven sonata and concerto cycles in Mexico City. He had held it several times in his lifetime, includes in New York and London.