content: tell application "Google Chrome"
  	repeat with w in windows
  		set i to 1
  		repeat with t in tabs of w
  			if URL of t starts with "https://play.google.com/music/" then
  				execute t javascript "document.getElementById('player-bar-play-pause').click()"
  				return
  			end if
  			set i to i + 1
  		end repeat
  	end repeat
  	-- open google play page if you haven't opend the page yet.
  	open location "https://play.google.com/music/"
  end tell
  