Instant Harmony with vielklang

Harmonize your melody with one single click - loading a single-voiced audio file - and create natural-sounding background choirs and brass arrangements!

It's all about Music

vielklang "thinks musically" and prepares the ground. vielklang by zplane is packed with musical intelligence and music theory: it automatically detects the best fitting harmonies for each individual input melody, and automatically synthesizes up to four voices with the voices not merely running in parallel but with their voicings automatically selected to sound most natural (voice leading). vielklang gives you a natural-sounding result immediately and allows you to concentrate on tweaking the results rather than edit them from scratch as with traditional harmonizers. Listen to audio examples here.
Creativity First

Directly interact with the music rather than with the technology. Don't waste time with tedious configuration of obvious parameters like root note, scale, tuning frequency etc.; let vielklang take care of this with its automatic recognition engines and concentrate on making music! Have complete control over your voicings and musical parameters like harmonies, pitch range and scale.
Discover the Potential

The vielklang audio harmonization instrument is not a harmonizer, but much more! With the vielklang plugin, you can easily generate and trial natural sounding background vocals and brass sections, modify melodies and single-voiced loops in terms of pitch and scale, and experiment with different harmonizations or chords triggered by different MIDI inputs. It allows you to generate up to four voices, edit their harmonies and single pitches, control the playback speed, and convert the audio to MIDI.

features at a glance

audio examples demo download
Key Features

* instant 2/4-Voice-harmonization of any single-voiced audio input
* integrated voice leading rules, resulting in most natural automatic harmonizations
* automatic harmony estimation from input melody
* one-click modification of key scales (e.g. major to minor)


Plugin Features

* snapshot system allowing multiple harmonizations per audio input
* audio-to-MIDI functionality
* automatic host tempo synchronization
* multiple Undo and Redo functionality
* stereo mixdown of harmonization as well as individual voice outputs
* automatic estimation of pitch and note length, key
* high quality formant preserving pitch shifting and time stretching (élastique engine)


Edit Features

* one-click modification of harmonies
* easy interaction with harmonization parameters like range (ambitus) or the distribution of the voices
* full control over every single note from all voices in Edit Mode
* adjustment of pitch quantization, delay, timbre, timing, pitch glide speed, volume, and pan for each voice individually


Graphical User Interface Features

* piano roll view of audio file with time overview and zoom options
* optional display of frequency curve, key grid and beat grid
* maximize and minimize control bars to adjust the plugin's GUI, optimizing the workflow

What's new in version 1.1

* RTAS support
* Timing Humanization Control
* Two-Voice Harmonization Mode
* availability of four-voiced (7th) chords
* single note splitting and muting
* the ability to save harmonization as audio and/or Midi to file
* drag'n'drop of Midi to track
* multiple pitch selection in edit mode
* option to smooth out note transitions