diff --git a/tex/crepbook.cls b/tex/crepbook.cls
index f6ad4f85..5a195515 100644
--- a/tex/crepbook.cls
+++ b/tex/crepbook.cls
@@ -413,6 +413,10 @@
   \IfStrEq{\@lang}{english}{pattern}{}
   \IfStrEq{\@lang}{french}{motif}{}
 }
+\newcommand{\Rythm}{
+  \IfStrEq{\@lang}{english}{rythm}{}
+  \IfStrEq{\@lang}{french}{rythme}{}
+}
 
 \let\musicnoteORIG\musicnote
 \renewcommand{\musicnote}[2][]{%