Two guitarists are turning their back on each other in order to improve their concentration. They are playing the same chord about every 10 seconds during the whole performance, letting time for the sound to die and for their attention to be tested. No metronome to help them. This exercice rarely offers moments of symbiosis. They sometimes even never come. This is all about listening to each other, forgetting the ego for the common strength that makes the power of music. But this performance confronts us to our mental and interpersonal limits. These guitarists have to face the aspect of failure inherent to "Feeling" despite it was imagined in the desire to connect with the others.