I'm going to ignore my dad's texts
What is causing you to ignore your dad's texts?
He is such an idiot and doesn't see me as a person. He keeps telling me to get a job already. How can you get a job if you're busy making music?
It sounds like your dad is concerned about you.  Rather than ignore him, which is wrong, you should let him know why you're too busy for a job right now.  It should make him less worried hopefully.
I don't see why I have to do that since my music career is important. I'll do what I want.
Your father is attempting to give you advice that will help you now and in the future. If he's telling you to get a job, it's probably because you are not supporting yourself as you should be at your age. It's important to be able to support yourself while you go after your passion.