During the singing, the club leader announces that he has noticed an echo in the room and will try it out (also could be on a hike overlooking a canyon). The following is a dialogue between the leader and the echo - a person out of the room or out of sight.
Leader: Hello
Echo: Hello
Leader: Cheese
Echo: Cheese
Leader: Bologna
Echo: (silence)
Leader: (to the group) It must not be working now. I'll try again. (to echo)
+ This leader is great.
Echo: Bologna