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Lirah-1

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A drone synth for the Korg NTS-1 mkii inspired by the Soma Laboratory Lyra 8

Lirah-1 is custom firmware for the Korg Nu:Tekt NTS-1 digital kit mkII, by @DanielMajid. Open source under MIT, latest release v1.0.0 (May 2026), 3 stars on GitHub.

forKorg Nu:Tekt NTS-1 digital kit mkII·by@DanielMajid

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MIT· DanielMajid/Lirah-1·downloads come from the creator’s GitHub releases

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Lirah-1 (NTS-1 mkII)

Lirah-1 is a Lyra-8 inspired oscillator for the Korg NTS-1 mkII (osc module).

This project is based on the original Lyre-1 project by James D. Cheetham: https://github.com/jamesdcheetham/Lyre-1

Lyra-8 from SOMA Laboratory https://somasynths.com/

Ported to NTS-1 mkII by Daniel Majid Mirzakhani.

Highlights

  • Sine-core voice with FM, wave folding, and feedback.
  • Hyper LFO behavior from two internal LFOs that are AND-gated.
  • Extra assignable modulation source (LFO 3) with selectable target and rate.
  • Playable range tuning for both modulator pitch and carrier pitch.

Controls

  • Knob A (FM DEPTH): FM amount from the modulator into the carrier.
  • Knob B (HYPER LFO): Depth of the Hyper LFO pitch jump.
  • LFO1 RATE: Rate of Hyper LFO lane 1.
  • LFO2 RATE: Rate of Hyper LFO lane 2.
  • FOLD: Amount of wave folding.
  • FM TUNE: Relative tuning of the modulator (up to one octave).
  • PITCH: Relative tuning of the carrier (up to one octave).
  • FEEDBACK: Feedback amount in the carrier path.
  • LFO3 TARGET: Chooses what LFO 3 modulates.
  • LFO3 RATE: Rate of LFO 3 with slow-focus scaling (0-50% = 0-1 Hz, 50-100% = 1-25 Hz).

LFO TARGET Map

  • OFF
  • FMDEPTH
  • HYPER LFO DEPTH
  • HYPER LFO 1
  • HYPER LFO 2
  • FOLD
  • FM TUNE
  • CARRIER TUNE
  • FEEDBACK

To build this project

  • Clone this repo In desired directory:

    Download this repo

    git clone --recurse-submodules https://github.com/DanielMajid/Lirah-1.git

  • Download the ARM GCC toolchain

    cd logue-sdk/tools/gcc/ ./get_gcc_osx.sh Run Make command to build binary

  • Compile project Run "make install" Open Korg Kontrol Editor

  • Load Project Drag .nts1mkiiunit file into the appropriate module category Click sync