The Sound of Creation, Paperback/Gabriella Zielke

Brilliant and relentless tech CEO Ava Lawson built a system to play the currency market and make her billions. Instead, it begins to play strange music and makes normally level headed people behave irrationally, violently, dangerously. While on the run from a coup to steal her code, Ava meets an ethereal stranger who seems to know more about her than she does. The stranger calls himself an apprentice. He pleads for her help to stop what they have started.