Spotify radio log to desktop

gistfile1.txt

tell application "Spotify"
	set _track to ""
	try
		repeat
			if player state is not stopped then
				if (_track is not equal to the spotify url of current track) then
					set _track to the spotify url of current track
					log _track
					do shell script "echo " & _track & " >> $HOME/Desktop/spotify.txt"
				end if
			end if
			delay 30
		end repeat
	end try
end tell