I don't know what the term major is specifically, but based off other responses, I am assuming it means fields that you enjoy/excel in.

I have always enjoyed music. I can play guitar, bass and piano, and enjoy songwriting. I plan to start a band next year, but currently play in my church band.

Recently I have enjoyed Biology, however I doubt I will take it further in high school. I lack the motivation/maturity to handle a Uni course in that field. I would struggle to take it seriously. Hence why I am doing a TAFE course in sound production.