Play quietly enough to hear the ambient sounds of the world. This might be the road outside, our breath, or the wind.

Everybody starts playing the same note. One person deviates from the note at a time. If a second person deviates from the note, the first person to have deviated returns to it, ad infinitum.

Somebody conducts. When the conductor indicates a change, everybody changes the note or sound they are making together.

Somebody conducts. The conductor points to individuals, who change the note or sound they are making when pointed at.

Everybody tries to work out when everybody else is going to change their sound, and tries to change their sound at the same time as everybody else.

The same as together together, but the role of conductor moves to the left every time the sound has changed three times.