Practice
I can play it once but cannot repeat it
A successful attempt has not yet been reduced to observable, repeatable conditions.
This governed route starts from what you can observe. It is source material and routing help, not a replacement for the current teacher seeing the player.
What you can observe
- consistent practice
- repeatability
- successful repetition
First bounded action
After one successful repetition, state what changed in setup, timing, or motion before playing again.
How to check it
The next repetition preserves the named condition.
Stop condition
Stop after three deliberate repetitions; do not continue until failure obscures the cause.
What this route cannot tell you
This route can help name an observable violin problem and choose a bounded test. It does not override the learner's current teacher or diagnose an individual player from a webpage.