diff --git a/docs/Changelog.md b/docs/Changelog.md
index 04a4760..613624d 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -8,6 +8,7 @@
 - playlist-random command jumps to a random playlist entry, default key binding is F9.
 - Fix OSC hide behavior on mouse move.
 - New binding to show the current file in File Explorer.
+- Shift key enables `process-instance=multi`.
 - MediaInfo v22.06
 - libmpv shinchiro 2022-07-02
 
diff --git a/src/Misc/Program.cs b/src/Misc/Program.cs
index 448341b..b874c77 100644
--- a/src/Misc/Program.cs
+++ b/src/Misc/Program.cs
@@ -32,6 +32,9 @@ namespace mpvnet
                 App.Init();
                 Mutex mutex = new Mutex(true, StringHelp.GetMD5Hash(App.ConfPath), out bool isFirst);
 
+                if (Control.ModifierKeys.HasFlag(Keys.Shift))
+                    App.ProcessInstance = "multi";
+
                 if ((App.ProcessInstance == "single" || App.ProcessInstance == "queue") && !isFirst)
                 {
                     List<string> args2 = new List<string>();