Sitting under a white sheet as a practice for listening

This is by the Field office for Listening considered a failed attempt of disappearing.

 

By being under the sheet something different happens. To the place, which is confronted by a new entity. To the person under the sheet, who is no longer that person.

 

What kind of listening is only possible under such a sheet?

How does the experience of failing to disappear inform a practice for listening?