diff --git a/ext/timidity/README b/ext/timidity/README
new file mode 100644
index 0000000000..f883cd0027
--- /dev/null
+++ b/ext/timidity/README
@@ -0,0 +1,3 @@
+MIDI spec
+http://www.borg.com/~jglatt/tech/midifile.htm
+