Audio How do I make the background-music stop playing when the pause-menu is active?

This is my code:

PauseMenuScript

using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class PauseMenuScript : MonoBehaviour
{
[SerializeField] GameObject pauseMenu;
public TextMeshProUGUI titleText;
public Button resumeButton;

public bool pauseBool = false;

// Start is called before the first frame update
void Start()
{
gameObject.SetActive(pauseBool);
}

// Update is called once per frame
void Update()
{

}


public void ActivePauseMenu()
{
pauseMenu.SetActive(true);
}

public void ClosePauseMenu()
{
pauseMenu.SetActive(false);
}


}

PauseHandlerScript

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PauseHandlerScript : MonoBehaviour
{

public bool paused = false;

public GameObject pauseMenu;

void Start()
{
pauseMenu.GetComponent<PauseMenuScript>().ActivePauseMenu();
}


void Update()
{

if (Input.GetKeyDown(KeyCode.Tab))
{
paused = !paused;
}
if (paused)
{
Time.timeScale = 0;
pauseMenu.SetActive(paused);


}
else
{
Time.timeScale = 1;
pauseMenu.SetActive(paused);
}



}
}

Here is my pausemenu and audio source component.