Find the names of the artists who have produced English songs but have never received rating higher than 8.
SELECT DISTINCT artist_name FROM song WHERE languages  =  "english" EXCEPT SELECT DISTINCT artist_name FROM song WHERE rating  >  8
SELECT DISTINCT artist_name FROM song WHERE languages  =  "english" EXCEPT SELECT DISTINCT artist_name FROM song WHERE rating  >  8
[{'artist_name': 'Enrique'}, {'artist_name': 'Michel'}]