My music duplicates and gives an error

I did a script for playing music between scenes, the problem is that when I go to a different scene the music play itself again and gives an error in the console saying “The object of type ‘AudioSource’ has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object
”. here is the code :

public class MusicPlay : MonoBehaviour
    public static MusicPlay musicplay;
    public bool Always;
    public GameObject music;

    void Awake() { 
    if (musicplay == null)
    musicplay = this;
    else if (musicplay != this)
    musicplay = null;


help would be really appreciated

When you change the scene all objects in the previous scene are destroyed, the object who has the audio source too, that explains the error you re receiving. I think this could help you Continuous AudioSource in DontDestroyOnLoad