Doodle generative compositions in your browser with Musical Spirograph

<figure> <img alt="Musical Spirograph webapp." data-caption="So pretty. | Screenshot: Terrence O’Brien / The Verge" data-portal-copyright="Screenshot: Terrence O’Brien / The Verge" data-has-syndication-rights="1" src="https://platform.theverge.com/wp-content/uploads/sites/2/2026/08/Screenshot-2026-08-21-at-2.49.24-PM.png?quality=90&#038;strip=all&#038;crop=0,0,100,100" /> <figcaption> So pretty. | Screenshot: Terrence O’Brien / The Verge </figcaption> </figure> <p class="wp-block-paragraph">I remember having a <a href="https://www.theverge.com/2014/5/26/5752028/turntable-with-robotic-arms-draws-beautiful-spirographs">Spirograph</a> as a kid and being obsessed with it. Its geometric patterns are hypnotic and gorgeous. I also love <a href="https://www.theverge.com/report/879819/laurie-spiegel-is-celebrating-40-of-music-mouse-with-a-modern-revival">generative music</a> composition. So bringing those two things together in a browser tab, I'm hooked. <a href="https://musical.toys/toys/spirograph/">Musical Spirograph</a> is a relatively simple concept. A set of points dash around the screen according to mathematical equations, generating hypotrochoids and epitrochoids. Those points pass through a series of concentric rings which trigger specific notes.</p> <p class="wp-block-paragraph">Honestly, that alone is fun enough, but you can customize it quite a bit. There are six different virtual rotors to pick from, you can have up to three arms drawing …</p> <p><a href="https://www.theverge.com/entertainment/983322/musical-spirograph-generative-composition">Read the full story at The Verge.</a></p>