Klaas Hoek Trivento and other organ-like instruments
Het ORGEL 96 (2000), nr. 3, 19-25 [summary]

trivento.jpg (17085 bytes)In the 20th century, several organ-like new instruments have been developed. An early example is the telharmonium by Thaddeus Cahill, an electrical instrument from 1906.

Most new instruments are meant to make sound-scapes, rather than to perform music in the form of compositions that are based on traditional sets of rules. Ferruccio Busoni wrote at the beginning of the 20th century: 'Frei ist die Tonkunst und frei zu werden ihre Bestimmung' [Music is free and to become free is its goal]. The bruitists were among the inventors of new instruments that were made according to this idea. A second phase started after 1950, as Mauricio Kagel, Nam June Paik and Henry Partch developed new instruments.

In The Netherlands new organ-like instruments are built on a regular basis, by artists like Hans van Koolwijk, Horst Rickels and Gerrit Terpstra. In Nnovember 1999, Rickels presented Trivento, made by the organ builders Pels & Van Leeuwen. It consists of a console and six columns of pipes that are situated around the audience. In each column, the pipes of two of the twelve keys are grouped, so the player can realise remarkable spatial effects. Furthermore, he can influence the wind-pressure and consequently the power and the pitch of the instrument. Trivento has five stops and two small bellows.