Career and Music Question

Well some of my main thoughts were focused on my future career today... omg I have no idea what I want to be.. but before I took these career tests and stuff as a first exploration of what I want to be for this school assignment I couldn't think of any other job I would want to be besides a vet (I've wanted to be that for all my life).  I love music so I could be a musician, I play the piano and violin and want to learn the guitar.. I love and CAN sing but musical jobs are kinda risky.. there's no guarantee that you'll be successful.. well I guess that's true for a lot of jobs.. I could be a hairstylist.. I occasionally on my own look up new hairstyles and try them out, I could be a video editor person, I love messing around with iMovie and stuff.. but i wouldn't focus on that I might get sick of sitting at a computer.. I could try to be an actor.. but that's also something I might not look into that much.. I love to draw but I don't really think that could be a good career of mine.. just a hobby and I could also be a music composer and photographer.. etc. I got my highest score in the artistic part and then in investigative (like veterinarian) which was not much lower but still.. and the rest were basically zero.. but it wasn't based on my skill just interest

Personally these quizzes were extremely stupid.. I mean one of questions was would you rather drive a car or do this and idk it was kinda dumb.. but they still did give me a to think about, anyways, what I always wanted to be was a vet as i said earlier.  I LOVE animals and would love to work with them when I'm older.  But i need to take more job shadows, the one I did last year in 8th grade wasn't very good, I mean it was, but not a lot of variety in three hours, a lot of dental procedures and stuff.. but I need to see if I can handle a lot of blood like in surgeries cause idk how well I can.. and I would need to get used to the fact of animals dying and euthanasia.. :/ and yeah.. oh well I still got time to figure all of this out.. but not a ton..

Ok and now my music question thing.. I've always wondered this before.. there are only so many notes like on a piano and I wonder if we'll ever run out of new and unique music!  Cause that would really suck..  I actually looked it up lol and basically most people think that there are so many new instruments and variations of single notes that we probably won't run out in our lifetime but it's possible someday in the future...