diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 549d27b..80fbfba 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.1.  Last change: 2019 Jun 10
+*eval.txt*	For Vim version 8.1.  Last change: 2019 Jun 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2183,7 +2183,7 @@
 
 					*v:version* *version-variable*
 v:version	Version number of Vim: Major version number times 100 plus
-		minor version number.  Version 5.0 is 500.  Version 5.1 (5.01)
+		minor version number.  Version 5.0 is 500.  Version 5.1
 		is 501.  Read-only.  "version" also works, for backwards
 		compatibility, unless |scriptversion| is 3 or higher.
 		Use |has()| to check if a certain patch was included, e.g.: >
@@ -2193,10 +2193,10 @@
 		completely different.
 
 					*v:versionlong* *versionlong-variable*
-v:versionlong	Like v:version, but also including the patchlevel.  Version
-		8.1 with patch 1234 has value 8011234.  This can be used like
-		this: >
-			if v:versionlong >= 8011234
+v:versionlong	Like v:version, but also including the patchlevel in the last
+		four digits.  Version 8.1 with patch 123 has value 8010123.
+		This can be used like this: >
+			if v:versionlong >= 8010123
 <		However, if there are gaps in the list of patches included
 		this will not work well.  This can happen if a recent patch
 		was included into an older version, e.g. for a security fix.
@@ -8123,10 +8123,9 @@
 
 		{lnum} is used like with |setline()|.
 		This works like |setline()| for the specified buffer.
-		On success 0 is returned, on failure 1 is returned.
 
-		If {expr} is not a valid buffer or {lnum} is not valid, an
-		error message is given.
+		When {expr} is not a valid buffer or {lnum} is not valid then
+		1 is returned.  On success 0 is returned.
 
 setbufvar({expr}, {varname}, {val})			*setbufvar()*
 		Set option or local variable {varname} in buffer {expr} to
@@ -8884,7 +8883,7 @@
 <
 sound_clear()						*sound_clear()*
 		Stop playing all sounds.
-		{only available when compiled with the +sound feature}
+		{only available when compiled with the |+sound| feature}
 
 							*sound_playevent()*
 sound_playevent({name} [, {callback}])
@@ -8893,8 +8892,11 @@
 		are used.  On Ubuntu they may be found in
 		/usr/share/sounds/freedesktop/stereo.  Example: >
 			call sound_playevent('bell')
+<		On MS-Windows, {name} can be SystemAsterisk, SystemDefault,
+		SystemExclamation, SystemExit, SystemHand, SystemQuestion,
+		SystemStart, SystemWelcome, etc.
 
-<		When {callback} is specified it is invoked when the sound is
+		When {callback} is specified it is invoked when the sound is
 		finished.  The first argument is the sound ID, the second
 		argument is the status:
 			0	sound was played to the end
@@ -8906,7 +8908,9 @@
 		   endfunc
 		   call sound_playevent('bell', 'Callback')
 
-<		Returns the sound ID, which can be passed to `sound_stop()`.
+<		MS-Windows: {callback} doesn't work for this function.
+
+		Returns the sound ID, which can be passed to `sound_stop()`.
 		Returns zero if the sound could not be played.
 		{only available when compiled with the |+sound| feature}
 
@@ -8922,6 +8926,10 @@
 sound_stop({id})					*sound_stop()*
 		Stop playing sound {id}.  {id} must be previously returned by
 		`sound_playevent()` or `sound_playfile()`.
+
+		On MS-Windows, this does not work for event sound started by
+		`sound_playevent()`. To stop event sounds, use `sound_clear()`.
+
 		{only available when compiled with the |+sound| feature}
 
 							*soundfold()*
@@ -11592,7 +11600,6 @@
 				#	Number
 				*	Funcref
 
-
 :unl[et][!] {name} ...				*:unlet* *:unl* *E108* *E795*
 			Remove the internal variable {name}.  Several variable
 			names can be given, they are all removed.  The name
@@ -11637,7 +11644,7 @@
 <			This is useful if you want to make sure the variable
 			is not modified.
 							*E995*
-			|:const| does not allow to for changing a variable. >
+			|:const| does not allow to for changing a variable: >
 				:let x = 1
 				:const x = 2  " Error!
 <							*E996*
diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak
index f479812..3c0c92b 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -106,6 +106,13 @@
 TERMINAL=no
 endif
 
+# Set to yes to enable sound support.
+ifneq ($(findstring $(FEATURES),BIG HUGE),)
+SOUND=yes
+else
+SOUND=no
+endif
+
 ifndef CTAGS
 # this assumes ctags is Exuberant ctags
 CTAGS = ctags -I INIT+ --fields=+S
@@ -633,6 +640,10 @@
 	libvterm/src/vterm_internal.h
 endif
 
+ifeq ($(SOUND),yes)
+DEFINES += -DFEAT_SOUND
+endif
+
 # DirectWrite (DirectX)
 ifeq ($(DIRECTX),yes)
 # Only allow DirectWrite for a GUI build.
@@ -849,6 +860,10 @@
 	$(OUTDIR)/vterm.o
 endif
 
+ifeq ($(SOUND),yes)
+OBJ += $(OUTDIR)/sound.o
+endif
+
 # Include xdiff
 OBJ +=  $(OUTDIR)/xdiffi.o \
 	$(OUTDIR)/xemit.o \
@@ -957,6 +972,10 @@
 DEFINES+=-DDYNAMIC_ICONV
 endif
 
+ifeq (yes, $(SOUND))
+LIB += -lwinmm
+endif
+
 ifeq (yes, $(USE_STDCPLUS))
 LINK = $(CXX)
  ifeq (yes, $(STATIC_STDCPLUS))
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index c6f9b25..54740d7 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -38,7 +38,9 @@
 #	  is yes)
 #	Global IME support: GIME=yes (requires GUI=yes)
 #
-#       Terminal support: TERMINAL=yes (default is yes)
+#	Terminal support: TERMINAL=yes (default is yes)
+#
+#	Sound support: SOUND=yes (default is yes)
 #
 #	DLL support (EXPERIMENTAL): VIMDLL=yes (default is no)
 #	  Creates vim{32,64}.dll, and stub gvim.exe and vim.exe.
@@ -381,6 +383,14 @@
 	libvterm/src/vterm_internal.h
 !endif
 
+!ifndef SOUND
+! if "$(FEATURES)"=="HUGE" || "$(FEATURES)"=="BIG"
+SOUND = yes
+! else
+SOUND = no
+! endif
+!endif
+
 !ifndef NETBEANS
 NETBEANS = $(GUI)
 !endif
@@ -454,6 +464,13 @@
 ! endif
 !endif # GUI
 
+!if "$(SOUND)" == "yes"
+SOUND_PRO	= proto/sound.pro
+SOUND_OBJ	= $(OBJDIR)/sound.obj
+SOUND_DEFS	= -DFEAT_SOUND
+SOUND_LIB	= winmm.lib
+!endif
+
 !if "$(CHANNEL)" == "yes"
 CHANNEL_PRO	= proto/channel.pro
 CHANNEL_OBJ	= $(OBJDIR)/channel.obj
@@ -494,7 +511,7 @@
 #VIMRUNTIMEDIR = somewhere
 
 CFLAGS = -c /W3 /nologo $(CVARS) -I. -Iproto -DHAVE_PATHDEF -DWIN32 \
-		$(CSCOPE_DEFS) $(TERM_DEFS) $(NETBEANS_DEFS) $(CHANNEL_DEFS) \
+		$(CSCOPE_DEFS) $(TERM_DEFS) $(SOUND_DEFS) $(NETBEANS_DEFS) $(CHANNEL_DEFS) \
 		$(NBDEBUG_DEFS) $(XPM_DEFS) \
 		$(DEFINES) -DWINVER=$(WINVER) -D_WIN32_WINNT=$(WINVER)
 
@@ -1217,7 +1234,7 @@
 LINKARGS1 = $(linkdebug) $(conflags)
 LINKARGS2 = $(CON_LIB) $(GUI_LIB) $(NODEFAULTLIB) $(LIBC) $(OLE_LIB) user32.lib \
 		$(LUA_LIB) $(MZSCHEME_LIB) $(PERL_LIB) $(PYTHON_LIB) $(PYTHON3_LIB) $(RUBY_LIB) \
-		$(TCL_LIB) $(NETBEANS_LIB) $(XPM_LIB) $(LINK_PDB)
+		$(TCL_LIB) $(SOUND_LIB) $(NETBEANS_LIB) $(XPM_LIB) $(LINK_PDB)
 
 # Report link time code generation progress if used. 
 !ifdef NODEBUG
@@ -1253,12 +1270,12 @@
 
 $(VIMDLLBASE).dll: $(OUTDIR) $(OBJ) $(XDIFF_OBJ) $(GUI_OBJ) $(CUI_OBJ) $(OLE_OBJ) $(OLE_IDL) $(MZSCHEME_OBJ) \
 		$(LUA_OBJ) $(PERL_OBJ) $(PYTHON_OBJ) $(PYTHON3_OBJ) $(RUBY_OBJ) $(TCL_OBJ) \
-		$(CSCOPE_OBJ) $(TERM_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) $(XPM_OBJ) \
+		$(CSCOPE_OBJ) $(TERM_OBJ) $(SOUND_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) $(XPM_OBJ) \
 		version.c version.h
 	$(CC) $(CFLAGS_OUTDIR) version.c
 	$(link) $(LINKARGS1) /dll -out:$(VIMDLLBASE).dll $(OBJ) $(XDIFF_OBJ) $(GUI_OBJ) $(CUI_OBJ) $(OLE_OBJ) \
 		$(LUA_OBJ) $(MZSCHEME_OBJ) $(PERL_OBJ) $(PYTHON_OBJ) $(PYTHON3_OBJ) $(RUBY_OBJ) \
-		$(TCL_OBJ) $(CSCOPE_OBJ) $(TERM_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) \
+		$(TCL_OBJ) $(CSCOPE_OBJ) $(TERM_OBJ) $(SOUND_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) \
 		$(XPM_OBJ) $(OUTDIR)\version.obj $(LINKARGS2)
 
 $(GVIM).exe: $(OUTDIR) $(EXEOBJG) $(VIMDLLBASE).dll
@@ -1273,12 +1290,12 @@
 
 $(VIM).exe: $(OUTDIR) $(OBJ) $(XDIFF_OBJ) $(GUI_OBJ) $(CUI_OBJ) $(OLE_OBJ) $(OLE_IDL) $(MZSCHEME_OBJ) \
 		$(LUA_OBJ) $(PERL_OBJ) $(PYTHON_OBJ) $(PYTHON3_OBJ) $(RUBY_OBJ) $(TCL_OBJ) \
-		$(CSCOPE_OBJ) $(TERM_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) $(XPM_OBJ) \
+		$(CSCOPE_OBJ) $(TERM_OBJ) $(SOUND_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) $(XPM_OBJ) \
 		version.c version.h
 	$(CC) $(CFLAGS_OUTDIR) version.c
 	$(link) $(LINKARGS1) /subsystem:$(SUBSYSTEM) -out:$(VIM).exe $(OBJ) $(XDIFF_OBJ) $(GUI_OBJ) $(CUI_OBJ) $(OLE_OBJ) \
 		$(LUA_OBJ) $(MZSCHEME_OBJ) $(PERL_OBJ) $(PYTHON_OBJ) $(PYTHON3_OBJ) $(RUBY_OBJ) \
-		$(TCL_OBJ) $(CSCOPE_OBJ) $(TERM_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) \
+		$(TCL_OBJ) $(CSCOPE_OBJ) $(TERM_OBJ) $(SOUND_OBJ) $(NETBEANS_OBJ) $(CHANNEL_OBJ) \
 		$(XPM_OBJ) $(OUTDIR)\version.obj $(LINKARGS2)
 	if exist $(VIM).exe.manifest mt.exe -nologo -manifest $(VIM).exe.manifest -updateresource:$(VIM).exe;1
 
@@ -1766,6 +1783,7 @@
 	proto/usercmd.pro \
 	proto/userfunc.pro \
 	proto/window.pro \
+	$(SOUND_PRO) \
 	$(NETBEANS_PRO) \
 	$(CHANNEL_PRO)
 
diff --git a/src/sound.c b/src/sound.c
index e28ccff..70f4425 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -13,17 +13,18 @@
 
 #include "vim.h"
 
-#if (defined(FEAT_SOUND) && defined(HAVE_CANBERRA)) || defined(PROTO)
-
-#include <canberra.h>
+#if defined(FEAT_SOUND) || defined(PROTO)
 
 static long	    sound_id = 0;
-static ca_context   *context = NULL;
 
 typedef struct soundcb_S soundcb_T;
 
 struct soundcb_S {
     callback_T	snd_callback;
+#ifdef MSWIN
+    MCIDEVICEID	snd_device_id;
+    long	snd_id;
+#endif
     soundcb_T	*snd_next;
 };
 
@@ -75,6 +76,15 @@
 	}
 }
 
+#if defined(HAVE_CANBERRA) || defined(PROTO)
+
+/*
+ * Sound implementation for Linux/Unix/Mac using libcanberra.
+ */
+# include <canberra.h>
+
+static ca_context   *context = NULL;
+
     static void
 sound_callback(
 	ca_context  *c UNUSED,
@@ -188,7 +198,7 @@
     }
 }
 
-#if defined(EXITFREE) || defined(PROTO)
+# if defined(EXITFREE) || defined(PROTO)
     void
 sound_free(void)
 {
@@ -197,6 +207,178 @@
     while (first_callback != NULL)
 	delete_sound_callback(first_callback);
 }
-#endif
+# endif
 
-#endif  // FEAT_SOUND && HAVE_CANBERRA
+#elif defined(MSWIN)
+
+/*
+ * Sound implementation for MS-Windows.
+ */
+
+static HWND g_hWndSound = NULL;
+
+    static LRESULT CALLBACK
+sound_wndproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+    soundcb_T	*p;
+
+    switch (message)
+    {
+	case MM_MCINOTIFY:
+	    for (p = first_callback; p != NULL; p = p->snd_next)
+		if (p->snd_device_id == (MCIDEVICEID) lParam)
+		{
+		    typval_T	argv[3];
+		    typval_T	rettv;
+		    int		dummy;
+		    char	buf[32];
+
+		    vim_snprintf(buf, sizeof(buf), "close sound%06ld",
+								p->snd_id);
+		    mciSendString(buf, NULL, 0, 0);
+
+		    argv[0].v_type = VAR_NUMBER;
+		    argv[0].vval.v_number = p->snd_id;
+		    argv[1].v_type = VAR_NUMBER;
+		    argv[1].vval.v_number =
+					wParam == MCI_NOTIFY_SUCCESSFUL ? 0
+				      : wParam == MCI_NOTIFY_ABORTED ? 1 : 2;
+		    argv[2].v_type = VAR_UNKNOWN;
+
+		    call_callback(&p->snd_callback, -1,
+			    &rettv, 2, argv, NULL, 0L, 0L, &dummy, TRUE, NULL);
+		    clear_tv(&rettv);
+
+		    delete_sound_callback(p);
+		    redraw_after_callback(TRUE);
+
+		}
+	    break;
+    }
+
+    return DefWindowProc(hwnd, message, wParam, lParam);
+}
+
+    static HWND
+sound_window()
+{
+    if (g_hWndSound == NULL)
+    {
+	LPCSTR clazz = "VimSound";
+	WNDCLASS wndclass = {
+	    0, sound_wndproc, 0, 0, g_hinst, NULL, 0, 0, NULL, clazz };
+	RegisterClass(&wndclass);
+	g_hWndSound = CreateWindow(clazz, NULL, 0, 0, 0, 0, 0,
+		HWND_MESSAGE, NULL, g_hinst, NULL);
+    }
+
+    return g_hWndSound;
+}
+
+    void
+f_sound_playevent(typval_T *argvars, typval_T *rettv)
+{
+    WCHAR	    *wp;
+
+    rettv->v_type = VAR_NUMBER;
+    rettv->vval.v_number = 0;
+
+    wp = enc_to_utf16(tv_get_string(&argvars[0]), NULL);
+    if (wp == NULL)
+	return;
+
+    PlaySoundW(wp, NULL, SND_ASYNC | SND_ALIAS);
+    free(wp);
+
+    rettv->vval.v_number = ++sound_id;
+}
+
+    void
+f_sound_playfile(typval_T *argvars, typval_T *rettv)
+{
+    long	newid = sound_id + 1;
+    size_t	len;
+    char_u	*p, *esc;
+    WCHAR	*wp;
+    soundcb_T	*soundcb;
+    char	buf[32];
+    MCIERROR	err;
+
+    rettv->v_type = VAR_NUMBER;
+    rettv->vval.v_number = 0;
+
+    esc = vim_strsave_shellescape(tv_get_string(&argvars[0]), FALSE, FALSE);
+
+    len = STRLEN(esc) + 5 + 18 + 1;
+    p = alloc(len);
+    if (p == NULL)
+    {
+	free(esc);
+	return;
+    }
+    vim_snprintf((char *)p, len, "open %s alias sound%06ld", esc, newid);
+    free(esc);
+
+    wp = enc_to_utf16((char_u *)p, NULL);
+    free(p);
+    if (wp == NULL)
+	return;
+
+    err = mciSendStringW(wp, NULL, 0, sound_window());
+    free(wp);
+    if (err != 0)
+	return;
+
+    vim_snprintf(buf, sizeof(buf), "play sound%06ld notify", newid);
+    err = mciSendString(buf, NULL, 0, sound_window());
+    if (err != 0)
+	goto failure;
+
+    sound_id = newid;
+    rettv->vval.v_number = sound_id;
+
+    soundcb = get_sound_callback(&argvars[1]);
+    if (soundcb != NULL)
+    {
+	vim_snprintf(buf, sizeof(buf), "sound%06ld", newid);
+	soundcb->snd_id = newid;
+	soundcb->snd_device_id = mciGetDeviceID(buf);
+    }
+    return;
+
+failure:
+    vim_snprintf(buf, sizeof(buf), "close sound%06ld", newid);
+    mciSendString(buf, NULL, 0, NULL);
+}
+
+    void
+f_sound_stop(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    long    id = tv_get_number(&argvars[0]);
+    char    buf[32];
+
+    vim_snprintf(buf, sizeof(buf), "stop sound%06ld", id);
+    mciSendString(buf, NULL, 0, NULL);
+}
+
+    void
+f_sound_clear(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
+{
+    PlaySound(NULL, NULL, 0);
+    mciSendString("close all", NULL, 0, NULL);
+}
+
+# if defined(EXITFREE)
+    void
+sound_free(void)
+{
+    CloseWindow(g_hWndSound);
+
+    while (first_callback != NULL)
+	delete_sound_callback(first_callback);
+}
+# endif
+
+#endif // MSWIN
+
+#endif  // FEAT_SOUND
diff --git a/src/testdir/test_sound.vim b/src/testdir/test_sound.vim
index 1e2c455..e74aa13 100644
--- a/src/testdir/test_sound.vim
+++ b/src/testdir/test_sound.vim
@@ -10,6 +10,10 @@
 endfunc
 
 func Test_play_event()
+  if has('win32')
+    throw 'Skipped: Playing event with callback is not supported on Windows'
+  endif
+
   let id = sound_playevent('bell', 'PlayCallback')
   if id == 0
     throw 'Skipped: bell event not available'
diff --git a/src/version.c b/src/version.c
index 5831e33..ee07b96 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1565,
+/**/
     1564,
 /**/
     1563,