Ensemble Cathode

EAI (Electroacoustic Improvisation) is a largely quiet, reductionist form of free improvisation in which musicians sculpt sound in real time using electronics, extended techniques, and the ambient characteristics of the room itself. Instead of melody, harmony, or steady pulse, the music focuses on texture, timbre, micro‑dynamics, and silence. Sine tones, feedback, contact microphones, tabletop guitars, and laptops often replace traditional instrumental roles. The result is an austere, highly attentive music that treats each sound—however small—as a structural event. EAI is frequently associated with the late‑1990s Tokyo onkyo scene and parallel European reductionist circles. Performances are typically intimate, with players listening as much as playing, privileging restraint, duration, and the sonic grain of materials.

Onkyo (also called onkyō-kei) is a Japanese approach to experimental, electroacoustic improvisation that centers on extremely quiet dynamics, sparse gestures, and the amplification of minute sonic events. Rather than focusing on melody, harmony, or pulse, it treats sound itself—hiss, hum, feedback, room tone, and the grain of instruments—as the primary material. Performers often use no-input mixing boards, sine-wave samplers, laptops, contact microphones, and extended instrumental techniques to reveal fragile textures and near-silences. Long stretches of space and restraint invite deep listening, making the acoustic qualities of the venue and the audience’s presence integral to the music.

Drone is a minimalist music genre defined by sustained tones, long durations, and extremely gradual change. Harmony is often static or centered on a single fundamental with subtle overtone shifts, while rhythm tends toward stasis or very slow pulses. Sound sources range from acoustic instruments (e.g., strings, organ, bagpipes, shruti box, tambura) to electronics (sine waves, oscillators, feedback, tape loops, and later digital synthesis and processing). Many composers favor just intonation or other alternative tuning systems to emphasize beating patterns, psychoacoustic effects, and the internal life of sound. Although drone as a sonic principle is ancient and global, the modern experimental genre cohered in the 1960s through the New York minimalists and related avant‑garde circles, then spread into ambient, experimental, and heavy music scenes. The focus is less on melody and more on timbre, resonance, and the phenomenology of listening.