Feedback Sensibilities
Feedback Sensibilities is a duo performance with Miguel Angel Crozzoli, presented at NIME 2026 (New Interfaces for Musical Expression) in London — Concert 3, Rich Mix Studio. It brings together two structurally different feedback instruments: a feedback saxophone and the Optical Scores circuit-sniffing interface.
The feedback saxophone, played by Miguel Crozzoli, uses a bell-mounted speaker that closes the tube, creating an acoustic feedback loop between speaker and microphones. Designed by Halldór Úlfarsson, it augments extended techniques — multiphonics, circular breathing — through feedback excited by the instrument’s own key combinations.
The circuit-sniffing interface is the Optical Scores instrument: coil inductors capture the electromagnetic field of circuit boards salvaged from wireless computer mice, and the resulting noise, clicks and resonances excite a waveguide-synthesis mesh in a closed feedback loop. Pushed close to instability, the algorithm itself becomes a feedback instrument.
Feedback is the shared space of the set — a semi-structured improvisation in which the acoustic and the electronic become sonically entangled to the point of ambiguity, dissolving the boundary between the two instruments into a common textural language.
The performance and its instruments are documented in the NIME 2026 music proceedings: Feedback Sensibilities (PDF). Developed at the Intelligent Instruments Lab, University of Iceland.
