The TMA Keyboard is a theory-aware composition and performance instrument designed for direct integration with the Temporal Music Architecture ecosystem. Available in 25, 46, 64, and 88 key configurations, the keyboard combines harmonic visualisation, expressive control, and assignable interaction into a unified compositional interface. Rather than acting solely as a MIDI controller, the instrument functions as an active extension of the TMA theory engine.

The keyboard features full harmonic LED guidance directly beneath the keys using integrated RGB lighting. Root notes are displayed in purple, current positional key centers in dark blue, scale notes in light blue, diatonic chord tones in yellow, and non-diatonic accidentals in red. As harmonic context changes within TMA, the visual state updates continuously, allowing scales, progressions, chord movement, and modal relationships to remain visible during performance and composition.

The control surface includes eight assignable rotary controllers, eight assignable buttons, and two banks of four velocity-sensitive performance pads. These controls can be mapped directly to TMA sequencing engines, harmonic explorers, modulation systems, mixer functions, generative processes, or live compositional workflows. The keyboard can therefore operate both as an expressive instrument and as an expandable command surface for the wider TMA environment.

All models feature weighted full-size keys with polyphonic aftertouch support, allowing detailed expressive control over harmonic movement, modulation, sequencing, and sound generation. The emphasis is placed on maintaining a responsive and musical playing experience while exposing deeper layers of harmonic interaction through the wider TMA system.

The enclosure is constructed from birch plywood and follows the same minimal industrial design language used throughout the Monk Project ecosystem. Shared materials, proportions, and surface treatments create visual continuity across TMA devices, controllers, and instruments. The focus remains on clarity, tactile interaction, and long-term compositional usability rather than conventional studio hardware aesthetics.