Continuum Fingerboard

Overview

The Continuum Fingerboard, often simply called the Continuum, is an electronic musical instrument designed by Lippold Haken at the University of Illinois and produced by Haken Audio. Instead of discrete keys, it has a continuous touch-sensitive playing surface that responds to finger position in three dimensions: horizontal position controls pitch, vertical position controls timbre or modulation, and the depth of finger pressure controls volume or another parameter. The result is one of the most expressive electronic instruments available, capable of vocal-like glides, microtonal scales, and continuous timbral evolution.

Origin & History

Lippold Haken began developing the Continuum in the 1980s as a research project at the University of Illinois, with the goal of building an electronic instrument that could match the continuous expressive control available to players of acoustic instruments such as the violin. After many years of refinement, the first commercial Continuum was released in 1999.

Subsequent models have included the half-size Continuum Mini and the more compact ContinuuMini, as well as integration with the Haken Eagan Matrix, a sophisticated internal sound engine. The Continuum has become a favourite of electronic musicians and composers seeking expressive depth beyond what conventional MIDI keyboards offer.

How It’s Played

The Continuum’s playing surface is a long strip covered with a textured neoprene skin. Underneath, sensors track the position and pressure of each finger. The player can press anywhere on the surface to play a note; sliding the finger along the length of the surface produces a continuous pitch glide, while sliding across the width modulates timbre or another assigned parameter, and pressing harder controls volume or expression.

The instrument can be configured with discrete pitch zones — much like piano keys — for players who want a more traditional layout, or with a fully continuous, fretless layout for sliding and microtonal music. It supports many tuning systems, including just intonation and various non-Western scales, making it well suited to experimental and cross-cultural music.

Cultural Significance

The Continuum occupies a special place in the contemporary electronic music landscape. It is used by composers and performers who want vocal-like expression and continuous control over multiple sound parameters at once, including the composer-performers Rolf Riehm, Jordan Rudess of the band Dream Theater, and many electronic and experimental musicians.

In film and game music the Continuum is prized for producing emotionally direct, vocal-like lines that sit comfortably between traditional acoustic instruments and modern synthesis. Its support for microtonal music has also made it a tool of interest for composers exploring non-Western tunings and just-intonation systems.

Related Instruments

• Ondes Martenot – an earlier electronic instrument with a ribbon-controller for continuous pitch
• Theremin – the early continuous-pitch electronic instrument
• Synthesizer – the broader family of modern electronic instruments
• Trautonium – another early continuous-pitch electronic instrument
• Sampler – the digital playback-based modern relative

Where to Hear It

Recordings by Jordan Rudess, particularly with Dream Theater and on his solo work, showcase the Continuum in a rock context. Composer Edmund Eagan’s recordings using the Continuum and the Eagan Matrix demonstrate its experimental and electronic capabilities. Many film and game soundtracks include unannounced Continuum performances for vocal-like lead lines.

• Wikipedia: Continuum Fingerboard
• Haken Audio

Learning Resources

The Continuum is a specialised instrument with a relatively small but dedicated community of players. Haken Audio publishes detailed documentation and video tutorials. Community forums, Discord channels, and the work of professional Continuum players online provide additional learning resources. The instrument requires substantial dedicated practice to develop reliable continuous-pitch technique.

Frequently Asked Questions

How is the Continuum different from a MIDI keyboard?
It has a continuous playing surface rather than discrete keys, allowing fully continuous pitch glides and three-dimensional control over each note’s parameters.

Can the Continuum play in standard equal-tempered tuning?
Yes. It can be configured with discrete pitch zones that emulate keyboard layout, or fully continuous for sliding and microtonal use.

Who makes the Continuum?
Haken Audio, founded by Lippold Haken at the University of Illinois.

Is the Continuum hard to learn?
For a player accustomed to discrete keys it requires substantial new technique to manage continuous pitch reliably. The reward is uniquely expressive control over the sound.