Example part A of what we need to change first in a new script

EditorWindowTutorialMonoDontUse.cs

#region using

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif
//using UnityEngine.UI;
//using UnityEngine.SceneManagement;
//using System;
//using System.Collections;
//using System.Collections.Generic;


#endregion

#region Script
namespace ZeredaGamesEngine.Core.MusicListsExamples.Example1
{
    public class EditorWindowTutorial : MonoBehaviour {}
}