text: keySocket.init(
      "youtube.music",
      function (key) {
  		if (key === keySocket.NEXT) {
              var nextButton = document.querySelector('#left-controls > div > tp-yt-paper-icon-button.next-button');
              keySocket.simulateClick(nextButton);
          } else if (key === keySocket.PLAY) {
              var playPauseButton = document.querySelector('#left-controls > div > tp-yt-paper-icon-button.play-pause-button');
              playPauseButton.click();
          } else if (key === keySocket.PREV) {
              var backButton = document.querySelector('#left-controls > div > tp-yt-paper-icon-button.previous-button');
              keySocket.simulateClick(backButton);
          } else if (key === keySocket.STOP) {
              var stopButton = document.querySelector('#left-controls > div > tp-yt-paper-icon-button.play-pause-button');
              stopButton.click();
          }
      }
  );
  