diff --git a/audio.md b/audio.md
index cedf2f9..bbfffe7 100644
--- a/audio.md
+++ b/audio.md
@@ -175,6 +175,7 @@ from the `mode` port, by new devices, or by a larger change.
  * Portamento/Glissando/Glide
  * Effects (reverb, equalization, overdrive, etc.)
  * Frequency generators/software synths
+ * Looping notes
  
 If we want to support even slower builds/fades we could use existing
 mode bits to change the units used by the envelope. That would allow