how to make the music last forver unity code example

Example 1: music that stays when you change scene unity

using UnityEngine;
public class MusicClass : MonoBehaviour {
  private AudioSource _audioSource;
  private void Awake()
  {
    DontDestroyOnLoad(transform.gameObject);
    _audioSource = GetComponent<AudioSource>();
  }
  public void PlayMusic()
  {
    if (_audioSource.isPlaying) return;
    _audioSource.Play();
  }
  public void StopMusic()
  {
    _audioSource.Stop();
  }
}

Example 2: how to make the music last forver unity

GameObject.FindGameObjectWithTag("Music").GetComponent<MusicClass>().PlayMusic();

Example 3: how to make the music last forver unity

using UnityEngine;  public class MusicClass : MonoBehaviour {     private AudioSource _audioSource;     private void Awake()     {         DontDestroyOnLoad(transform.gameObject);         _audioSource = GetComponent<AudioSource>();     }      public void PlayMusic()     {         if (_audioSource.isPlaying) return;         _audioSource.Play();     }      public void StopMusic()     {         _audioSource.Stop();     } }