     }
     
     func modeChangeTapped(sender: KeyboardKey) {
+        self.playKeySound()
+        
         if let toMode = self.layout?.viewToModel[sender]?.toMode {
             self.currentMode = toMode
         }

    }
    
    func shiftDown(sender: KeyboardKey) {
        if self.shiftWasMultitapped {
            self.shiftWasMultitapped = false
            return

    }
    
    @IBAction func toggleSettings() {
        self.playKeySound()
        
        if let settings = self.settingsView {
            let hidden = settings.hidden
            settings.hidden = !hidden
