In the past few years, we have covered a bunch of cool Piano and music visualizers here. If you are into Raspberry Pi projects, you can always build your own. Aleksander Evening has built a Rousseau-inspired LED piano visualizer with a Pi Zero.
More gadgets like this: here
Piano LED Visualizer
You are going to need a Piano with MIDI or USB output, WS2812B LED Strip, Waveshare LCD TFT 1,44” 128x128px, and a bunch of other simple components to get started. Simply connect the LED strip, set the Pi as a Bluetooth MIDI host, and you are ready to go. The instructions are available on GitHub.
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