diff --git a/dlls/dmstyle/dmstyle_private.h b/dlls/dmstyle/dmstyle_private.h
index 3382468d277..978d75fea66 100644
--- a/dlls/dmstyle/dmstyle_private.h
+++ b/dlls/dmstyle/dmstyle_private.h
@@ -42,11 +42,6 @@
 #include "dmusicf.h"
 #include "dmusics.h"
 
-/*****************************************************************************
- * Interfaces
- */
-typedef struct IDirectMusicMelodyFormulationTrack IDirectMusicMelodyFormulationTrack;
-	
 /*****************************************************************************
  * ClassFactory
  */
@@ -97,28 +92,6 @@ typedef struct _DMUS_PRIVATE_COMMAND {
 	IDirectMusicCollection* ppReferenceCollection;
 } DMUS_PRIVATE_COMMAND, *LPDMUS_PRIVATE_COMMAND;
 
-/*****************************************************************************
- * IDirectMusicMelodyFormulationTrack implementation structure
- */
-struct IDirectMusicMelodyFormulationTrack {
-  /* IUnknown fields */
-  const IUnknownVtbl *UnknownVtbl;
-  const IDirectMusicTrack8Vtbl *TrackVtbl;
-  const IPersistStreamVtbl *PersistStreamVtbl;
-  LONG           ref;
-
-  /* IDirectMusicMelodyFormulationTrack fields */
-  LPDMUS_OBJECTDESC pDesc;
-};
-
-/* IUnknown: */
-extern HRESULT WINAPI IDirectMusicMelodyFormulationTrack_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) DECLSPEC_HIDDEN;
-extern ULONG WINAPI   IDirectMusicMelodyFormulationTrack_IUnknown_AddRef (LPUNKNOWN iface) DECLSPEC_HIDDEN;
-/* IDirectMusicTrack(8): */
-extern ULONG WINAPI   IDirectMusicMelodyFormulationTrack_IDirectMusicTrack_AddRef (LPDIRECTMUSICTRACK8 iface) DECLSPEC_HIDDEN;
-/* IPersistStream: */
-extern ULONG WINAPI   IDirectMusicMelodyFormulationTrack_IPersistStream_AddRef (LPPERSISTSTREAM iface) DECLSPEC_HIDDEN;
-
 /**********************************************************************
  * Dll lifetime tracking declaration for dmstyle.dll
  */