Show HN: Playing Piano with Prime Numbers

2 coffeecoders 4 8/18/2025, 3:14:11 PM nabraj.com ↗

I decided to turn prime numbers into a mini piano and see what kind of music they could make.

Inspired by: https://news.ycombinator.com/item?id=44888548

Github: https://github.com/neberej/prime-piano

Comments (4)

vunderba · 32m ago

Nice job. Related, I remember seeing an attempt at mapping primes to minor scales a few years back.

https://www.youtube.com/watch?v=duVyBVNX3D8

coffeecoders · 27m ago

Very cool.

Primes have such an irregular yet structured distribution, and mapping them to pitches is a clever way to make that hidden pattern audible.

drankl · 1h ago

I wonder how it sounds if you map the primes straight onto Hz instead of piano scales.

coffeecoders · 1h ago

It won't be a musical scale if mapped directly to Hz (maybe sine wave mapping?).

For example, prime 2 → 2 Hz (inaudible), 101 → 101 Hz (deep bass), 1009 → ~1 kHz (bright tone).

Right now the app just maps primes to MIDI notes so they sit nicely on a piano.

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Show HN: Playing Piano with Prime Numbers

Comments (4)