Complex sentence: After graduation, he moved to New York City to attend Columbia University for a master's degree in chemistry, but finding his job prospects in chemistry to be very restricted due to his race, turned to music for a living.
Split into simpler sentences: After graduation, he moved to New York City to attend Columbia University for a master's degree in chemistry. However, he found his job prospects in chemistry to be very restricted due to his race, and turned to music for a living.