Where TouchDesigner and Notch, both covered elsewhere on this site, lean toward generative visuals and real-time VFX, Isadora — from TroikaTronix — is built specifically around live performance: triggering and manipulating video, sound, and control signals in response to what performers actually do on stage, night after night, show after show. It’s the software running behind an enormous amount of contemporary dance, theater, and gallery installation work that never gets labeled “media art” but absolutely is. Isadora 101 – Complete Beginner Tutorial Series is TroikaTronix’s own on-ramp, and the first installment gets a working patch on screen fast.
Actors, not nodes
Isadora calls its building blocks actors rather than nodes or ops — a naming choice that isn’t just cosmetic. Each actor does one job (play a movie, apply an effect, watch for a MIDI trigger, hold a number) and you connect actors together on a canvas the same way you’d patch a modular synth, wiring outputs to inputs. The performance framing matters here: actors are meant to be triggered live, by a stage manager or the performers themselves, not just calculated frame by frame in the background.
Scenes: patches you can jump between
The organizing unit above the actor is the scene — a self-contained patch representing one section, cue, or moment of a show. A real production typically strings together many scenes, with control logic deciding when to transition from one to the next, whether that’s a manual cue, a timer, or a sensor picking up a performer hitting a mark. Thinking in scenes rather than one enormous continuous patch is the biggest conceptual shift for anyone coming from a single-canvas tool — it maps directly onto how a show is actually structured into cues.
Built for the pressure of live cueing
The feature that separates performance software from generative-art software is reliability under pressure: Isadora is built around the assumption that a cue has to fire correctly, on time, in front of an audience, with no chance for a second take. That shapes everything from how triggers work to how the interface is laid out for quick manual overrides mid-show. Starting with a single scene — one video, one effect, one trigger — and getting comfortable firing it live before stacking on complexity is the right place to begin, since the whole tool is designed around that moment of live execution.