csharp same folder path

                
                        //All these paths lead to the same file/folder
string path0 = "C:\\Users\\Usr\\source\\repos\\ConsoleAppMorzartV2\bin\\Debug\\Wave\\M1.wav";
string path1 = @"C:\Users\Usr\source\repos\ConsoleAppMorzartV2\bin\Debug\Wave\M1.wav";
string path2 = System.IO.Path.Combine(Environment.CurrentDirectory, @"Wave\M1.wav"); 
string path3 = @".\Wave\M1.wav";