Hi DaisyJane and welcome to this forum .....
Thank you for sharing your concerns re AN surgery.
If you have not already done so, please send for the ANA free informational materials. See: https://www.anausa.org/component/rsform/form/20-ana-contact-us-copy
These materials contain a wealth of accurate information.
One of the things that we stress is seeking a physician with vast, successful AN treatment. Given that hearing is vitally important to your career, it is even more important to have the best possible care.
I am a musician also, so when I lost my hearing it felt devastating. Each of us have different scenarios re our hearing loss and how it affects what we do or what is important to us. I will not sugarcoat it that losing hearing has been a significant adjustment. I was a singer and pianist/organist so it affected me in several ways. In my case I have had two AN surgical removals because it grew back after the first surgery (this is very, very unusual so do not think it happens frequently). The first surgery was retrosigmoid approach and I did retain 20% of my hearing with 100% speech discrimination so a traditional hearing aid helped tremendously. However, music no longer sounded the same from both sides. I learned to position myself when singing with others (whenever possible) to accommodate the deficit, which worked.
Following my second surgery via translab I, of course, became totally deaf in the AN ear. Because I knew ahead of time this would be the case, my surgeon (Dr. Rick Friedman) implanted the abutment for my Oticon Medical Ponto (bone-anchored hearing device) at the same time. The Ponto receives sound from my AN side and sends it to my only hearing ear via bone conduction. Therefore directionality is greatly affected, but I do hear what is coming from both sides.
I still play without difficulty, but singing has been a difficult adjustment. You do not say how old you are but if you are young, I feel your brain will make the needed adjustments and you will do fine. Up until my first surgery I had "perfect pitch," so relearning how to "hear" music has been difficult.
If you would like to know more, I would be happy to talk with you. Just PM me or let me know (do not put any identifying contact info in the body of a comment here, however).
Tell us a little more about your situation ..... size of your AN, treatment options you have considered, etc.
Thoughts and prayers.