Thank you very much!  Can you filter that list to show only the artist_names who have song for which the country code is the UK?
SELECT artist_name FROM artist WHERE country  =  "UK" INTERSECT SELECT T1.artist_name FROM artist AS T1 JOIN song AS T2 ON T1.artist_name  =  T2.artist_name
show only artist_names who have songs from the UK refers to artist.country = 'UK'; intersection used to filter artists who have songs; joining artist and song tables on artist_name to identify artists with songs.