<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
how do you let someone on stage know that you are not happy with their performance?
<|assistant|>
One way to let someone on stage know that you are not happy with their performance is to give them feedback after they have completed their performance. This can be done in a constructive way and should stress the positives as well as the negatives. You could also indicate with your facial expression or body language that you are not happy. Additionally, you could make a comment to that effect during the performance.