A postman knocks at the door wearing a disco ball helmet with a retractable visor and an audience member lets him in. Thus begins a wholesome hour of delivering mail across space and time, featuring a lot of imagination. This experimental show relies almost entirely on our participation, as the crowd co-creates the scenes with performer Sevrin Willinder. With inventive and versatile props and a strong commitment to mail delivery, our clown is an endearing character with a calm demeanour who encourages his gathering to play along by deciphering body language, sound cues, and reading the room.

There are slower moments caused by hesitation as everyone in this space acclimatises to suddenly becoming involved and through repetitive scenes that slow the pace. And yet, Willinder’s performance invites audiences to sit with their discomfort, which by the end of this show seems to have dissolved into a spirit of camaraderie and friendship. Time Travel Postman is a puzzling slow burner and it’s only at the very end that all the pieces fall into place.

Time Travel Postman, Gilded Balloon Patter House, until 31 August, 8.40pm.