diff --git a/Bashrc.wiki b/Bashrc.wiki
index ab4eb71..8ac32d1 100644
--- a/Bashrc.wiki
+++ b/Bashrc.wiki
@@ -187,6 +187,25 @@ As an added bonus, the `-l` option will print the url for that product's support
 
 ----
 
+== `sing()` and `note2freq()` ==
+
+https://git.thurstylark.com/vcsh/bashrc.git/tree/.bashrc.d/sing.bash
+
+I was having trouble writing music scripts for the pcspkr because all the examples that I could find only used frequency numbers as arguments to `beep`, and it was difficult to map frequency numbers to musical note letters in the process of making my own tunes. `note2freq()` solves this issue by taking a musical note in the form of `<letter>[accidental]<octave>`, where:
+
+* `<letter>` is one of `A` through `G`
+* `[accidental]` is one of:
+	* `b` for flat
+	* `s` for sharp
+	* omitted for a natural note
+* `<octave>` is `1` through `7`
+
+`sing()` takes a list of notes in this same form along with note length in ms, uses `note2freq()` to translate each one to a frequency number and constructs a string of arguments that `beep` can use to play the entire tune in one go.
+
+Both of these in tandem make beep tune writing way easier.
+
+----
+
 ==Weechat==
 
 https://git.thurstylark.com/vcsh/bashrc.git/tree/.bashrc.d/weechat.bash