docs: ai music

docs/src/SUMMARY.md

@@ -9,3 +9,5 @@
 - [Technical](./technical.md)
   - [2D Vehicle Physics](./2d_vehicle_physics.md)
   - [Multiplayer](./multiplayer.md)
+  - [AI](./ai.md)
+    - [Music](./ai_music.md)

docs/src/ai.md

@@ -0,0 +1 @@
+# AI

docs/src/ai_music.md

@@ -0,0 +1,25 @@
+# AI Music
+
+## Commercial offerings
+
+### aimusic.so
+
+Seems to be a commercial frontend for the AudioCraft models afaict.
+
+It is possible to download lossy encodings of generated songs from aimusic.so without paying or creating an account through an (apparent) fault in their service:
+
+1. Close all incognity windows
+1. Open new incognity window
+1. Go to aimusic.so and generate a song
+1. Click share, copy the link and open the link in a new tab
+1. Click download
+
+## Open source models
+
+### AudioCraft MusicGen
+
+High quality. Requires vast GPU VRAM.
+
+### DiffRhythm
+
+Especially fast model but not as high quality as MusicGen from AudioCraft afaict.