glsl audio introduction (EN)

[bonz](https://sr.ht/~jmaselbas/bonz/) jon.zdiv.net [Revision 25 shader showdown qualifiers](https://www.youtube.com/watch?v=MnwTamb6kd0) [Revision 25 shader showdown finals](https://www.youtube.com/watch?v=Rk9f4GUuXGk) [0b5vr GLSL Techno Live Set - "0mix" (WebGL 64KB Intro)](https://www.youtube.com/watch?v=3lOptjAeA2w) [0b5vr x ukonpower x Renard @ draw(tokyo); #2 GLSL Techno Live Set](https://www.youtube.com/watch?v=Mmrl-nI8AEo) [Drifting Shore by nusan (PC 4k intro)](https://www.youtube.com/watch?v=gwT18ETo_iI) [vestige - by wrighter - 4k intro writup](https://wrighter.xyz/blog/2025_04_26_vestige_4k_intro_writeup) [Relay - by dok & jon - Linux 32Kb intro](https://www.youtube.com/watch?v=XIEX3YNmSZI)