# Sequencer

## Structure

The sequencer is organized into:

- **Banks**: 16 banks (B01-B16)
- **Patterns**: 16 patterns per bank (P01-P16)
- **Steps**: Up to 32 steps per pattern
- **Slots**: 8 concurrent playback slots

## Patterns

Each pattern has:

- **Length**: Number of steps (1-32)
- **Speed**: Playback rate relative to tempo
- **Steps**: Each step can have a script

### Speed Settings

- 1/4: Quarter speed
- 1/2: Half speed
- 1x: Normal speed
- 2x: Double speed
- 4x: Quadruple speed

## Slots

Slots allow multiple patterns to play simultaneously.

- Press **1-8** to toggle a slot
- Slot changes are quantized to the next bar
- A "?" indicates a slot queued to start
- A "x" indicates a slot queued to stop

### Workflow

1. Edit a pattern in the main view
2. Press **g** to queue it to the first free slot
3. It starts playing at the next bar boundary
4. Press **G** to queue its removal

## Steps

Steps are the basic unit of the sequencer:

- Navigate with arrow keys
- Toggle active with Enter
- Each step can contain a Rhai script

### Active vs Inactive

- Active steps (highlighted) execute their script
- Inactive steps are skipped during playback
- Toggle with Enter key

## Playback

The sequencer uses Ableton Link for timing:

- Syncs with other Link-enabled apps
- Bar boundaries are used for slot changes
- Phase shows position within the current bar

## Files

Projects are saved as JSON files:

- **s**: Save with dialog
- **l**: Load with dialog
- File extension: `.buboseq`