What is the name and country of origin for each artist who has released a song with a resolution higher than 900?
SELECT T1.artist_name ,  T1.country FROM artist AS T1 JOIN song AS T2 ON T1.artist_name  =  T2.artist_name WHERE T2.resolution  >  900 GROUP BY T2.artist_name HAVING count(*)  >=  1
name and country of origin for each artist refers to SELECT T1.artist_name, T1.country; song with a resolution higher than 900 refers to WHERE T2.resolution > 900; artist related to song refers to JOIN on artist_name;