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r/ableton · u/NOTorAND1 août 2026, 15:26

I built a hardware tool that visualizes scales and Ableton MIDI directly on your keyboard

I've been working on a side project for the last couple years that finally reached the point where I'm comfortable showing people.

It's called KEEZI, and it's essentially a hardware companion for MIDI keyboards that's comprised of an LED strip and a touchscreen. It can visualize scales, chords, incoming MIDI from a DAW, and a bunch of other tools that are a mix of educational, fun, or just helpful for creating.

The whole project started because I got tired of looking up scale diagrams or putting stickers on my keyboard whenever I wanted to experiment outside of C major. or A minor. I wanted the keyboard itself to show me the notes instantly. There were keyboards that have lights but they're expensive and I didn't want to be locked in to a specific keyboard.

I put together a prototype pretty quickly that showed me scales on the LEDs and later decided I'd try to make it an actual product and add more features. I ended up learning PCB design, 3D printing, and a bunch of other stuff I had no idea I had to do to make a prototype into an actual product. My degree is in electrical engineering but my career is in factory automation, so there was lots of new things to learn.

One workflow I think is really cool is sending different MIDI tracks from Ableton to the LED strip so each instrument shows up as a different color across the keys. It makes it much easier to visualize what's happening in your track without staring at the piano roll.

I'm especially interested in hearing what doesn't seem useful, or what workflows you think I'm completely missing. Honest criticism is welcome.

I manufactured my first batch recently, and now that people besides me can finally use it, I'm realizing there are probably workflows I've never even considered.

I'd genuinely appreciate feedback from people who spend a lot of time making music. If you'd like to see it in action, I put together a few demo videos at keezishop.com

Commentaires

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u/ya_rk11 août 2026, 19:26
Kudos on the effort. Unfortunately I don't really see a strong usecase. To really play freely in scale it needs to be muscle memory, not something you look at the lights and aim your fingers there. And for learning scales, this could help, but honestly it's just a matter of Rote to learn the scales and you need to put them in muscle memory anyway as early as possible, so you'd need to graduate from the crutch quickly. For people who don't want to freestyle on scales or learn them, they can anyway use the scale mode in Ableton piano roll. So I don't really see a strong use case here. I'm sorry if it's taking the wind out of your sails, I have mad respect for anyone who puts the time and effort to make something real like this, and I hope that making ut was its own reward. Just trying to be brutally honest about the prospect of a usage for this. One thing I could use something like this is to help learn a particularly tricky part of a piano piece, where the sheet music is tricky from a note and/or rhythm perspective, but that's a pretty narrow and rare use.
- u/NOTorAND11 août 2026, 19:45
  No worries about taking the wind out of my sails. I see what you’re saying and I agree that just seeing scales isn’t going to give you the muscle memory without a lot of practice and time playing in the scale. It has personally helped me come up with melodies as someone who doesn’t really have interest in being a professional pianist.
  
  Regardless the scales feature is just one of the many features. Like i mentioned above, I think it’s super cool to be able to see the track im working on with different color LEDs for each track which is a big reason i posted it on this sub. You can also hook up KEEZI directly to your piano to light up the LEDs as you play which is more of a fun feature than a functional feature.
  
  I tried to add as many features as I found useful because I know that a single feature won’t appeal to as many people and I really only mentioned the features i thought r/ableton would connect with.
  
  The apps that I currently have programmed are
  
  scales *note visualizer (see the notes as you play) *chord dictionary *chord recognition (play chord and the screen shows the name) *move any scale to just the white keys *one key press plays entire chord and does so within a defined scale *arpegiator *sheet music quiz *colorful animations.