This software integrates a small specialized synthesizer and vocal processor. It can be used to learn Byzantine Church singing. You can play from the keyboard, mouse or touch screen. MIDI input is also available. Voice functions include: pitch highlighting, synthesizer control by voice, pitch correction and voice-to-ison conversion.

On the screen there are labels with symbols of Byzantine notes. There is a metronome. The program is oriented on the Chrysanthos tuning of the diatonic scale: 9/8 – 12/11 – 88/81. The octave is divided into 17 (or 19) non-equal parts, it allows you to get all the Byzantine modes.

Features:

• No installation required
• Metronome
• Different channels for melos and isokratima
• MIDI input
• 17 (or 19) non-equal steps per octave: same tuning for all scales
• Voice functions: highlight key, synthesizer control by voice, pitch correction, voice-to-ison conversion
• Record audio
• Training mode
• Cross-platform: may be compiled on any platform, supported by Qt 4.x or 5.x

https://sourceforge.net/projects/byzorgan/