C# multithread hjälp!

public void StartPlaying()
        {

            //Skapa ett handtag
            
            IntPtr SpotHandle = FindWindow("SpotifyMainWindow", null);
            SetForegroundWindow(SpotHandle);
            //Skicka kommando
            System.Threading.Thread.Sleep(1000); // 1 sekund efter spotify har startats
            int time = 50;
            for (int i = 0; i < 4; i++)
            {
                SendKeys.Send("{TAB}"); // 4 tabs
                System.Threading.Thread.Sleep(time);
            }
            for (int ii = 0; ii < 5; ii++)
            {
                SendKeys.Send("{DOWN}"); // 5 down
                System.Threading.Thread.Sleep(time);
            }
            
            SendKeys.Send(" "); //space
            System.Threading.Thread.Sleep(time);
        }