text: (function() {
      // Sound Resourses
      const glitch_01 = document.querySelector('#sound_hv-01'); // @audio.njk
      const glitch_02 = document.querySelector('#sound_hv-02'); // @audio.njk
      const BGM = document.querySelector('#sound_bgm'); // @audio.njk
  
      // DOM
      let audio_hvGlitch_01 = document.querySelectorAll('.audio_hv_01'),
          audio_hvGlitch_02 = document.querySelectorAll('.audio_hv_02'),
          audio_switchBGM = document.querySelector('.BGM')
  
      let btnHoverSoundEffect = function() {
          
          for (let i = 0; i < audio_hvGlitch_01.length; i++) {
              audio_hvGlitch_01[i].addEventListener('mouseenter', function () {
                  glitch_01.play();
              }, false);
              audio_hvGlitch_01[i].addEventListener('mouseleave', function () {
                  glitch_01.pause();
              }, false);
          };
  
          for (let i = 0; i < audio_hvGlitch_02.length; i++) {
              audio_hvGlitch_02[i].addEventListener('mouseenter', function () {
                  glitch_02.play();
              }, false);
              audio_hvGlitch_02[i].addEventListener('mouseleave', function () {
                  glitch_02.pause();
              }, false);
          };
      }
  
      if (audio_hvGlitch_01) {
          btnHoverSoundEffect();
      }
  
      // Turn on/off BGM
      let play = false;
  
      let toggleBGMBtn = function() {
          if (!play) {
              audio_switchBGM.classList.remove('_pause');
              BGM.play();
              play = true;
          } else {
              audio_switchBGM.classList.add('_pause');
              
              BGM.pause();
              play = false;
          }
      }
  
      let switchBGM = function() {
          audio_switchBGM.addEventListener('click', toggleBGMBtn, false)
      }
  
      // BGM.play();
  
      switchBGM();
  
  }());
  