Complex sentence: In 1934 he became conductor of the Göttingen International Handel Festival, where he conducted the first modern production of Handel's "Tolomeo", on 19 June 1938.
Split into simpler sentences: In 1934 he became conductor of the Göttingen International Handel Festival. He conducted the first modern production of Handel's "Tolomeo", on 19 June 1938.