Keyboard-first cockpit
Editing stays under your hands
The main Grid is built for repeated musical action: select tracks and steps with arrows, toggle steps with Enter, move transport with Space, and use modifiers for pitch, velocity, step length, track loop length, pattern length, timing resolution, and visible step windows.
Dense but stable
Grid rows, step cells, header cells, parameter cards, meters, and quick panels keep stable dimensions so the cockpit does not jump while you play.
Hold-key overlays
Help, track operations, pattern operations, randomization, and parameter snapshots appear as temporary overlays instead of permanent clutter.
Mouse as a precision tool
Use visual pickers, context menus, Fractal MAP editing, and hover-wheel controls where pointer input is genuinely faster.
Sound sources
Internal engines plus MIDI utility tracks
A project can mix drum voices, synth voices, Massfall material-collision sounds, sample playback, Fractal Hybrid tracks, and MIDI utility tracks. Factory presets give fast starting points, while parameter banks keep the most useful controls visible on the cockpit.
| Engine | Use it for |
|---|---|
| Drum/Noise | 808-style kick, snare, hat, clap, and tom voices with track-aware labels. |
| BASS, FM, Pluck | Mono bass lines, synth parts, simple melodic parts, and string-like plucks. |
| Sampler | Sample-based tracks with visual sample browsing and cached folder scans. |
| Massfall | Procedural material-collision cascades such as pencils, beads, screws, and moonlike grains. |
| MIDI utility | External synth sequencing without needing an internal sound engine on the track. |
Fractal Hybrid
Orbit audio as a playable engine
Fractal Hybrid turns map motion into tone. Mandelbrot, Burning Ship, Feather, and SFX families drive orbit-audio behavior with per-note sound slots. The MAP view can fit all note mappings, zoom for exploration, pan with a modifier-drag, and edit coordinates visually. TRIG auditions the current sound, and stopped playback follows the current note immediately.
Movement
Parameter locks, snapshots, and LFO routing
Parameter locks let a step override the selected parameter. Bulk clear actions can target one parameter, a whole visible page, one track, or the current pattern. Four global LFOs can target track, FX, and LFO parameters with pattern/free/step behavior.
Projects
Patterns, song grid, and project slots
Projects persist patterns, configuration, song state, audio settings, MIDI settings, and project-slot metadata. Pattern switching is immediate while stopped and queued to the next boundary during playback. F12 opens the Project Launcher; F9/F10 can move quickly across saved slots.
External gear
MIDI output and control-surface input
OneSeq can send MIDI notes per track and receive MIDI input for control. Input profiles can target selected-track parameters, fixed tracks, mixer values, sends, FX, LFOs, transport, section changes, and focus behavior.
For device setup and the built-in profiles, use the MIDI controller page.
Agent-assisted control
Optional MCP live bridge
Config includes an MCP area for power-user sessions. Enable MCP to start a token-protected local bridge, select the exact OS interface addresses that should listen, and optionally save one MCP request log file per app session. Logs are written only to a folder selected by the user.