Binding To Singleton Class Observable Collection Member

I just can't seem to figure this out. I found some similar Questions here but either I can't figure out the right direction for my approach or I am doing something completly wrong.

My Application has a Singleton Class Logger, which saves Log messages from every class in my program.

public class Logger
 {
     private Logger()
     {
 
     }
 
     private static volatile Logger instance;
 
     public static Logger GetInstance()
     {
         // DoubleLock
         if (instance == null)
         {
             lock (m_lock)
             {
                 if (instance == null)
                 {
                     instance = new Logger();
                 }
             }
         }
         return instance;
     }
 
     //Helper for Thread Safety
     private static object m_lock = new object();
 
     private ObservableCollection<string> _Log;
 
     public ObservableCollection<string> Log
     {
         get { return _Log; }
     }
 
     public void Add(string text)
     {
         if (_Log == null)
             _Log = new ObservableCollection<string>();
 
         Log.Add(DateTime.Now.ToString() + " " + text);
     }
 
     public void Clear()
     {
         _Log.Clear();
     }
 
 }
 

Now I want to bind Log to ListBox in my MainWindow, but I can't figure out the right Binding

<ListBox Name="lstboxLog" Grid.Row="2" Margin="10,0,10,10" ItemsSource="{Binding Source={x:Static tools:Logger.Log}}" Height="100" />
 

tools is the namespace of the singleton class in my XAML. I'm sure this is simpler than I think, but I am just overlooking something.

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