1 files changed, 2 insertions, 0 deletions
diff --git a/README.org b/README.org
index 5551ee2..8447221 100644
--- a/README.org
+++ b/README.org
@@ -23,3 +23,5 @@ To build a drum guide track with click:
 #+BEGIN_SRC sh
 make guide
 #+END_SRC
+
+When the environment variable =LILYPOND_USE_CHORDS= is set a simplified chord track is rendered for use as a drum guide.