Elementale (1991-1995) has been written for six spatially-positioned percussionists, coordinated by a computer. The computer signals the tempo by means of a light metronome to the players. This way it is possible to execute the slowing down or speeding up of the tempo (ritardandi and accelerandi) very precisely, as well as different simultaneous tempi. Slagwerk Den Haag: Emiel Matthijsse, Tom van der Loo, Steef Gerritse, Murk Jiskoot, Arnold Marinissen & Ron Colbers