Complex sentence: In high school, Kurstin focused on jazz piano, and after graduating he moved to New York to study with Jaki Byard, Charles Mingus' pianist, at The New School for Jazz and Contemporary Music.
Split into simpler sentences: In high school, Kurstin focused on jazz piano. After graduation, he moved to New York to study with Charles Mingus' pianist Jaki Byard at The New School for Jazz and Contemporary Music.