<p>Is it common to ask a teacher for a feedback after the audition (I should precise that I know the teacher and had a lesson previously) or this should be confidential and I will never get an answer ?</p>
<p>Thank for your answer !</p>
<p>I think it depends on the kind of relationship you have with the teacher. If you have an established relationship with open lines of communication, it may be appropriate, although it is likely the teacher would volunteer this information without needing to be asked. But you should not expect more than vague reassurances, not an assessment of whether you were admitted. . If you have more auditions upcoming you could ask if there are suggestions for improvement. </p>