About toniq.fyi
Hi, fellow music explorer. I’m a software engineer and the sole developer of this website.
What is this resource?
Toniq.fyi is my personal attempt to structure and show what I learn about music theory and explore it interactively
What’s here right now
- Tonnetz Grid — an interactive geometric visualization of harmonic relationships between notes and chords
- Intervals — intervals with semitone distances, symbols, names, and inversion relationships
- Chord Types — chord structures and formulas
- Modes — musical modes
Everything is still in active development — expect things to grow and change.
FAQ
Why this service was created?
Music is one of my lifelong passions and it’s been almost 10 years of my deep dive into music theory.
During that dive I tried to deeply understand many things about music theory,
but the deeper I went, the more I was told I just need to memorize things instead of trying to make sense of
them.
This was not the way for me. I wanted to have a logical mathematical system of how things work, which nobody ever
gave me.
So I decided to investigate and build one for myself.
What’s coming next?
- page about degrees and their functions
- visualizations for chord types and modes
- motions for intervals (how can you change interval to sound more/less tense)
- motions for chords (what can you do with chords, which chords can you use after this?)
- chord pages with everything info about chord
- physical computation of tensions inside chords and intervals
- mathematical spaces for visualizing chords
What is the core idea?
Music theory is just a mathematical concept with some historical and cultural decorations, and as with every
mathematical system everything can be computed and everything can and should be visualized.
So the main idea of the project is to compute all data, that can be computed and visualize everything that can
be visualized to better understand how things work in music theory if we remove all these historical
decorations.
What is the main goal of the project?
The main goal is to compute and visualize everything about music theory and simplify it in any possible way.
Who is this for?
Me 😄 The first intention was to build the project for me,
but it can be used by anyone who is interested in music theory: musicians, producers, composers or any other
music theory enthusiasts.
Is this free?
Yes, completely. Everything that can be used for educational purposes will stay free forever 🎉
How can I support this resource?
Right now I haven’t set up any donation systems, but in the future I am planning to use Ko-Fi and/or Patreon.
- If you want to support me right now, share this resource somewhere or hit me up at support@toniq.fyi with some ideas or any other feedback you might have
How can I suggest an idea or give any other feedback?
Feel free to send an email to support@toniq.fyi.
Ideas for new tools, missing topics, or anything that confused you are all
genuinely helpful. I am grateful for any feedback you might have!
Question?
Answer
Changelog
April 2026
- Added Modes reference table
- Added Chord Types reference table
March 2026
- Added Intervals reference table
February 2026
- Added Tonnetz Grid
Around November 2025
- started to build mathematical systems to describe chords in mathematical space
Around 2018 🌱
- started to collect data for music theory tables
Do you still have any questions or any other reason to contact me? Write to support@toniq.fyi.