diff --git a/parts/scenes/app_arithmetic.lua b/parts/scenes/app_arithmetic.lua
index 62a12335..41acf3f3 100644
--- a/parts/scenes/app_arithmetic.lua
+++ b/parts/scenes/app_arithmetic.lua
@@ -231,7 +231,7 @@ scene.widgetList={
     WIDGET.newKey{name='7',x=540,y=320,w=90,font=60,fText="7",code=pressKey'7'},
     WIDGET.newKey{name='8',x=640,y=320,w=90,font=60,fText="8",code=pressKey'8'},
     WIDGET.newKey{name='9',x=740,y=320,w=90,font=60,fText="9",code=pressKey'9'},
-    WIDGET.newButton{name='back',x=1200,y=660,w=110,h=60,font=60,sound='back',fText=CHAR.icon.back,code=backScene},
+    WIDGET.newButton{name='back',x=1200,y=660,w=110,h=60,font=45,sound='back',fText=CHAR.icon.back,code=backScene},
 }
 
 return scene
diff --git a/parts/scenes/app_link.lua b/parts/scenes/app_link.lua
index 210a4626..3332347f 100644
--- a/parts/scenes/app_link.lua
+++ b/parts/scenes/app_link.lua
@@ -399,7 +399,7 @@ end
 scene.widgetList={
     WIDGET.newButton{name='reset',x=80,y=60,w=110,h=60,color='lG',fText=CHAR.icon.retry_spin,code=pressKey'r',hideF=function()return state==0 end},
     WIDGET.newSwitch{name='invis',x=100,y=140,lim=80,disp=function()return invis end,code=pressKey'q',hideF=function()return state==1 end},
-    WIDGET.newButton{name='back',x=1200,y=660,w=110,font=50,sound='back',fText=CHAR.icon.back,code=pressKey'escape'},
+    WIDGET.newButton{name='back',x=1200,y=660,w=110,font=45,sound='back',fText=CHAR.icon.back,code=pressKey'escape'},
 }
 
 return scene
diff --git a/parts/scenes/app_memorize.lua b/parts/scenes/app_memorize.lua
index 32b032ba..0195c0f4 100644
--- a/parts/scenes/app_memorize.lua
+++ b/parts/scenes/app_memorize.lua
@@ -120,7 +120,7 @@ scene.widgetList={
     WIDGET.newKey{name='7',x=540,y=320,w=90,font=60,fText="7",code=pressKey'7'},
     WIDGET.newKey{name='8',x=640,y=320,w=90,font=60,fText="8",code=pressKey'8'},
     WIDGET.newKey{name='9',x=740,y=320,w=90,font=60,fText="9",code=pressKey'9'},
-    WIDGET.newButton{name='back',x=1200,y=660,w=110,h=60,font=60,sound='back',fText=CHAR.icon.back,code=backScene},
+    WIDGET.newButton{name='back',x=1200,y=660,w=110,h=60,font=45,sound='back',fText=CHAR.icon.back,code=backScene},
 }
 
 return scene
diff --git a/parts/scenes/app_tap.lua b/parts/scenes/app_tap.lua
index 72c4ee0f..5ae3cff0 100644
--- a/parts/scenes/app_tap.lua
+++ b/parts/scenes/app_tap.lua
@@ -26,7 +26,7 @@ function scene.keyDown(key,isRep)
         else
             ins(keyTime,1,TIME())
             keyTime[41]=nil
-            SFX.play('click',.3)
+            SFX.play('lock')
         end
     end
 end
@@ -71,7 +71,7 @@ function scene.draw()
 end
 
 scene.widgetList={
-    WIDGET.newKey{name='tap',x=640,y=540,w=626,h=260,fText="TAP",color='Z',font=100,code=function(i)love.keypressed('b'..i)end},
+    WIDGET.newKey{name='tap',x=640,y=540,w=626,h=260,sound='touch',fText="TAP",color='Z',font=100,code=function(i)love.keypressed('b'..i)end},
     WIDGET.newButton{name='back',x=1140,y=640,w=170,h=80,font=60,sound='back',fText=CHAR.icon.back,code=backScene},
 }
 
diff --git a/parts/scenes/lang.lua b/parts/scenes/lang.lua
index c2c6e6f4..b16190cd 100644
--- a/parts/scenes/lang.lua
+++ b/parts/scenes/lang.lua
@@ -53,6 +53,7 @@ local function _setLang(lid)
     TEXT.clear()
     TEXT.show(langList[lid],640,360,100,'appear',.626)
     collectgarbage()
+    if FIRSTLAUNCH then SCN.back()end
 end
 
 scene.widgetList={
diff --git a/parts/scenes/setting_key.lua b/parts/scenes/setting_key.lua
index bf78ab34..b8271d3f 100644
--- a/parts/scenes/setting_key.lua
+++ b/parts/scenes/setting_key.lua
@@ -231,7 +231,7 @@ scene.widgetList={
 
     WIDGET.newKey{name='restart',x=150,y=670,w=180,h=60,code=function()_setSel(0)end},
 
-    WIDGET.newButton{name='back',x=1140,y=640,w=190,h=80,font=60,sound='back',fText=CHAR.icon.back,code=backScene},
+    WIDGET.newButton{name='back',x=1140,y=640,w=170,h=80,font=60,sound='back',fText=CHAR.icon.back,code=backScene},
 }
 
 return scene