Niels Hannibal: Rhythmy [Rytmin] (1992)

Instruments: all
Begin and end to be conducted. [Start reading from the bottom!]

Find the common pulse of the group. Play in relation to it
Use only one tone (that is, the same tone all the time)
Play your inner rhythm
maybe the rhythm of your heart

Use three different tones as a maximum
Play without pulse/arhythmically.
Use unlimited number of tones