# Sonic Pi Monthly Challenge #4

**URL:** <https://in-thread.sonic-pi.net/t/sonic-pi-monthly-challenge-4/4897>\
**Category:** Creations & Ideas\
**Created:** [January 1, 2021, 12:24pm UTC](https://in-thread.sonic-pi.net/t/sonic-pi-monthly-challenge-4/4897 "2021-01-01T12:24:52Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![robin.newman](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@robin.newman](https://in-thread.sonic-pi.net/u/robin.newman)\
**Post date:** [January 12, 2021, 4:20pm UTC](https://in-thread.sonic-pi.net/t/sonic-pi-monthly-challenge-4/4897/7 "2021-01-12T16:20:43Z")

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Here is my entry for this challenge. I decided not to use the website to generate the bianry string, but to do that within sonic pi itself. It makes it easy to update and try other strings.  
I also liked the recent post by @theibbster for a [chord progression tool](https://in-thread.sonic-pi.net/t/chord-progression-tool/4947) which I developed and used in my code.  
EDIT just noticed a couple of glitches in the soundcloud file. I won’t update it, but if you play the SP code it should sound correct.

You can hear the result on soundcloud, with the code link below

https://w.soundcloud.com/player/?visual=false&url=https%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F964257646&show_artwork=true&maxheight=166

> <https://gist.github.com/rbnpi/0e742a8ff0f1de49dae87fe6a28de15e>

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