diff --git a/libs/core/music.cpp b/libs/core/music.cpp
index 5b31c50e..3311cc19 100644
--- a/libs/core/music.cpp
+++ b/libs/core/music.cpp
@@ -1,9 +1,28 @@
 #include "ksbit.h"
 
 namespace music {
+    /**
+     * Plays a tone through ``speaker`` for the given duration.
+     * @param frequency pitch of the tone to play in Hertz (Hz)
+     * @param ms tone duration in milliseconds (ms)
+     */
+    //% help=music/play-tone weight=90
+    //% blockId=device_play_note block="play|tone %note=device_note|for %duration=device_beat" icon="\uf025" blockGap=8
+    //% parts="speaker"
     void playTone(int freqency, int ms) {
         uBit.soundmotor.soundOn(freqency);
         if(ms > 0) uBit.sleep(ms);
         uBit.soundmotor.soundOff();
     }
+
+    /**
+     * Plays a tone through ``speaker``.
+     * @param frequency pitch of the tone to play in Hertz (Hz)
+     */
+    //% help=music/ring-tone weight=80
+    //% blockId=device_ring block="ring tone (Hz)|%note=device_note" icon="\uf025" blockGap=8
+    //% parts="speaker"
+   void ringTone(int frequency) {
+      playTone(frequency, 0);
+   }
 }
diff --git a/libs/core/shims.d.ts b/libs/core/shims.d.ts
index affa3b2d..6f5f91fd 100644
--- a/libs/core/shims.d.ts
+++ b/libs/core/shims.d.ts
@@ -535,15 +535,6 @@ declare namespace music {
     //% blockId=device_play_note block="play|tone %note=device_note|for %duration=device_beat" icon="\uf025" blockGap=8
     //% parts="speaker" shim=music::playTone
     function playTone(freqency: number, ms: number): void;
-
-    /**
-     * Plays a tone through ``speaker``.
-     * @param frequency pitch of the tone to play in Hertz (Hz)
-     */
-    //% help=music/ring-tone weight=80
-    //% blockId=device_ring block="ring tone (Hz)|%note=device_note" icon="\uf025" blockGap=8
-    //% parts="speaker" shim=music::ringTone
-    function ringTone(frequency: number): void;
 }
 declare namespace pins {