EM-OMEGA

EM-OMEGA is a movement-driven interactive sonic installation from Entropy Music. At its centre is a handheld sphere carrying capacitive touch, infrared and gyroscope sensors. It senses how a participant touches, rotates, moves, holds and approaches it, and translates those interactions into MIDI sequences and real-time musical parameters. The same movements are sent as OSC to software such as TouchDesigner, so sound and responsive visuals are shaped together.

The installation reverses the usual relationship between movement and music: instead of the body following the music, the music follows the body. There is no conventional musical interface. The body becomes the interface, movement becomes compositional information, and sound emerges from the relationship between participant and installation.

Most MIDI interfaces are built around established forms of musical control — keys, pads, knobs, faders. EM-OMEGA treats body movement and spatial interaction as its primary control language instead.

Touch, orientation, motion and proximity are not mapped one-to-one onto single parameters. Several kinds of physical interaction combine to shape musical sequences, dynamics, structure and audiovisual response in real time, which makes MIDI part of a larger interactive environment rather than a control protocol between devices.

In a conventional dance performance, choreography follows an existing musical timeline. EM-OMEGA reverses that. A rotation, a change of orientation, a move through space, a touch on the surface or a change in proximity all become compositional input, and MIDI becomes a bridge between body, space, sound, visual media and real-time interaction.

Live performance shows EM-OMEGA at its most compelling. In 2026 it was used in the collaborative performance 《声命体》, where professional dancers worked the interactive sphere directly into the choreography. They were not following a fixed score: their physical interaction with the installation generated the sound heard during the performance, and that sound and its visuals became the environment they kept responding to — a continuous loop of body → installation → sound / visual → body. The submission video documents this performance.

Performance and choreography 泊地舞团 · interactive installation Entropy Music · coordination 好奇设.

Away from the stage, EM-OMEGA works as a participatory installation in exhibitions, museums, festivals and public spaces. Visitors need no musical training and no instructions; touching, rotating, carrying and moving the sphere is enough to shape the sound. Several spheres and several participants can share one space, so collective movement shapes a shared audiovisual environment.