# Panel overview

Pattern / Param sequencer views and Wave / Tune oscillator views.

The faceplate has two independent axes — sequencer view and oscillator view. The [homepage tour](/#instrument) mirrors both with hover tips.

## Sequencer: Pattern vs Param

| View | What you edit | Deep dive |
| --- | --- | --- |
| **Pattern** | 16-step note grid, accent, slide, SUS/ALT | [Sequencer](/docs/sequencer) |
| **Param** | Per-step parameter lanes (Param Seq) and Blend | [Param sequencer](/docs/param-sequencer) |

Switch with **Tab**, the Pattern / Param ears, or the site tour tabs.

![Pattern and Param ears](figure:view-param)

In Param view, pick a parameter, paint steps (or use Draw), and use **Blend** to crossfade panel knobs with sequenced overrides.

![Blend](figure:param-blend)

## Oscillators: Wave vs Tune

| View | What you see |
| --- | --- |
| **Wave** | OSC 1 / OSC 2 waveform pickers, ×2, Mix, visualizer |
| **Tune** | Tune A / B, Range (semitone throw), A→B / B→A sync |

Press **TUNE** on the oscillator card (or the Tune tab on the site) to open Tune mode; **Close** returns to Wave.

![TUNE button](figure:osc-tune)

Full detail — waveforms, Custom tables, Mix, Range, and sync LEDs: [Oscillators](/docs/oscillators).

## Plugin window

- **Sequencer LED** — switch the sequencer card off and the window shrinks to a slim keyboard strip: a wide multi-octave keyboard, with the MIDI map, Song JSON and shortcut icons stacked beside it. Sequencer-only keys and Play step aside until you turn it back on.
- **Follow Host** (plugins only) — RUB takes tempo and play/stop from your DAW. The BPM field shows the host tempo and locks while it’s on. With the sequencer off, it just keeps the delay in time.
- **OPTS** — License, Import Presets, About and Reset in every format. Audio/MIDI Settings and Quit are standalone-only.

## Keyboard and capture

The bottom keyboard writes the selected step (Shift-click auditions only). **Rec** arms note capture: keys/MIDI advance through the pattern. Hard MIDI hits = accent; held notes = slide.

## Shortcuts and song JSON

![Shortcuts](figure:shortcuts)

![Song JSON](figure:song-json)

Hover the keyboard icon for the cheat sheet — it only lists sequencer keys while the sequencer is on. The braces icon opens full-song JSON for AI tools — see [Song JSON](/docs/song-json).