The instrument consists of several kneeling performers. The player strikes each on the head with a fake mallet or his fist as if playing a xylophone. Each player utters a single note when struck. Simple songs such as "Twinkle, Twinkle, Little Star" can be played this way.
This works best if a very young scout picks the adult leaders from the audience at "random" and performs the work. The leaders will have to be in on it to make the song sound right.