text: // https://developer.chrome.com/extensions/content_scripts
  
  
  // https://developer.chrome.com/extensions/messaging
  chrome.runtime.onMessage.addListener(function (msg, sender, sendResponse) {
      if (msg.text === 'report_back') {
          sendResponse(
  		document.getElementById('player-artist').textContent + ' --- ' 
  		+document.getElementById('currently-playing-title').textContent
  		);
      }
  });
  