Complex sentence: To expand his horizons, he travelled to Moscow in 1924, where he met Nikolai Myaskovsky, Alexander Goedicke, and Felix Blumenfeld, who supported the young composer.
Split into simpler sentences: To expand his horizons, he travelled to Moscow in 1924. Here he met Nikolai Myaskovsky, Alexander Goedicke, and Felix Blumenfeld, who supported the young composer.