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ARC-24 Documentation

Chords performance

Chords mode gives you eight diatonic chord pads — the seven triads of your key (I through vii° in roman numerals), plus the tonic triad an octave up as an eighth pad for lift at the top of a progression.

By default, every pad plays a triad: root, third, and fifth, all notes drawn from the current scale. Nothing on the main grid adds sevenths or suspensions until you turn on the modifiers below.


The triad grid

Pads What you get
1–7 The seven diatonic triads in the key — major, minor, and diminished depending on scale degree
8th pad The I chord again, one octave higher — useful for cadences and variety without leaving the home harmony

Pad labels show chord names (C, Dm, Em, …) and/or roman numerals (I, ii, iii, …). All voicings stay in key.

Chords mode: 8 pads with chord names (e.g. C, Dm, Em) and/or roman numerals. Mode pill "Chords" selected. 7th and Sus buttons below grid.
Chords mode: 8 pads with chord names (e.g. C, Dm, Em) and/or roman numerals. Mode pill "Chords" selected. 7th and Sus buttons below grid.

Playing chords

  • Tap or hold a pad to sound the triad (or modified voicing if 7th/Sus is on)
  • Notes sustain while you hold, like Notes mode
  • Short taps and long holds both work — release lifts the chord

7th and Sus modifiers

Two latching buttons below the grid override the default triads for chords you play while they're on:

Button Effect
7th Adds the diatonic 7th — maj7, dominant 7, m7, or m7♭5 depending on the chord
Sus Sus2 voicing — the third is replaced by the second above the root

Tap to engage; tap again to clear. You can toggle them mid-progression — the next pads you hit use the active modifier.

When both are off, pads return to plain triads.


What gets recorded

Each stroke records the voicing you played — triad, 7th, or sus. You can mix all three on one track in the same bar. Playback flashes the pad with the recorded chord name (e.g. Cmaj7 when you played a 7th, not just C).


Note name labels

When Note names on pads is on in Setup, individual pitch names can appear on the pads alongside chord symbols.


Recording

  1. Select a track tab
  2. Arm it
  3. Press Play and trigger the chord pads

Tips

  • Stay on triads for clear, stable harmony; add 7th for colour and tension; use Sus for open, unresolved movement
  • The octave I pad (8th) is an easy way to brighten a progression without changing key
  • Layer a sustained synth pad under your changes (long release + Mixer → FX → Atmosphere)
  • See Recording for quantize and overdubbing