I'm taking singing lessons from a few teachers; I am trying to figure out, in a reasonable way, which teacher to stick with.
I'm in a situation though, when I don't have a way to evaluate the quality of the teacher (eg. credentials, renowned school, etc.).
Generally speaking, is perceived progress in singing performance necessarily a good indicator of the quality of the teaching method?
I have experience in other fields (eg.) sports, but progress doesn't always implies learning a correct structure (eg., in a given sport, one may increase strength, but not technique, and lead to the false impression that the increase in performance is appropriate).
How easy is to develop "hidden" or subtle bad habits, in singing?
If I (perceivedly) improve using a given method, is that a good enough reason to stick with it?