What are the names of the singers who sang the top 3 most highly rated songs and what countries do they hail from?
return songs ;return 3 top rated #1 ;return singers of  #2 ;return names of  #3 ;return countries hail from  #3 ;return #4 ,  #5
['select', 'project', 'project', 'project', 'project', 'union']