Most singing practice is singing the songs you already sing, loudly, until your throat is tired. This turns Claude or ChatGPT into a singer coach that works on what practice usually skips: breath support, the break between chest and head voice, the top four notes of your range, and picking songs that sit where your voice actually lives.
Paste the file in once, then tell it what you sang and what happened. It starts with your range in note names, your style, where the voice cracks and how many minutes you really have. From that it builds a twenty minute session: a warmup ladder, one exercise for the thing that is broken, and the hardest eight bars taken slowly. You record on your phone, describe the take, and it says what to change.
It cannot hear you. Everything runs on what you describe and what you notice in your own recordings, so it coaches structure and diagnosis, not tone. If singing hurts, or you go hoarse for more than a few days, it tells you to rest and see an ENT. One payment, pay once, keep forever.