# Live Feedback Have you ever heard **feedback at a concert**? Annoying, right? Way worse when you are the sound engineer and everybody looks at you! In this video Alex Mars, from [XSSR Academy](http://xssracademy.com/), shows you how to train your ears to catch those feedbacks as quickly as possible. The **Live Feedback Exercise** emulates the sound of feedback which is "about to happen". {% embed url="" %}