Find the names and number of works of the three artists who have produced the most songs.
return artists ;return songs produced of #1 ;return number of  #2 for each #1 ;return the  three highest of #3 ;return #1 where #3 is equal to any of #4 ;return names of #5 ;return works of #5 ;return number of  #7 for each #5 ;return #6 ,  #8
['select', 'project', 'group', 'aggregate', 'comparative', 'project', 'project', 'group', 'union']