Obelisk by Frozen Plain

4.1/5.0 (Total reviews: 224)

Obelisk is a MIDI plugin instrument that harmonises input MIDI and outputs it to your synths. It is designed to be a flexible way of experimenting with chords and harmonies. Obelisk’s chord picker allows you to pick what harmonies should be applied to each note. As well as this, Obelisk features an optional constraining algorithm that will ensure the harmonies fit your chosen key and scale.

Note: These hosts do not support Obelisk: Logic 9 or lower, Garage Band, Maschine (does not allow MIDI routing), Pro Tools, Reason (does not allow MIDI routing)

current price $25.00 base price $9.00

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Overview: Products Included

As well as the core features, Obelisk has many aspects designed to make it a pleasure to use, such as a resizable GUI, loads of chord and scale presets, and the ability to make your own chords or scales. After hovering over a control for a moment, Obelisk will show popup tool-tips explaining the function of the control.

Obelisk can optionally constrain all notes to a key and scale of your choosing. This allows for a consonant result no matter what notes you play. The scale can be fully customised, and there is a wide selection of presets as well. As well as this, the scale and key that you choose will be highlighted on the GUI keyboard helping you play in scales you are unfamiliar with.

$25 Value


key Features

  • Very easy to use, no music theory required.
  • Algorithm to constrain chords to a key and scale.
  • Resizable GUI and selectable GUI themes.
  • Customise each note of the chord and scale.
  • Dynamically keyswitch or automate the changing of the chord.
  • Choose retrigger behaviour – either sustain notes, useful for pads, or retrigger every time.
  • Huge selection of chord and scale presets – hear your chords constrained in Blues or Persian scales, for example.
  • See the scale highlighted on the keyboard.
  • Chord names are shown as you play.


current price $25.00 base price 9