diff --git a/oregano/instrument.rkt b/oregano/instrument.rkt
index f9c6929..6a05039 100644
--- a/oregano/instrument.rkt
+++ b/oregano/instrument.rkt
@@ -30,7 +30,7 @@
 (define saw-instrument
   (letc ([bus 0]
          [freq 440])
-        (out bus (mul 0.2 (sin-osc ar freq 0)))))
+        (out bus (mul 0.2 (saw ar freq)))))
 
 
 ;; setup