From 1980 to 2000, which artist had the most disco releases?
From 1980 to 2000 refers to groupYear between 1980 and 2000; tag = 'disco'; the most releases refer to MAX(COUNT(id));
SELECT T1.artist FROM torrents AS T1 INNER JOIN tags AS T2 ON T1.id = T2.id WHERE T1.groupYear BETWEEN 1980 AND 2000 AND T2.tag LIKE 'disco' GROUP BY T1.artist ORDER BY COUNT(T2.tag) DESC LIMIT 1
database name:db_id music_tracker
torrents table torrents Cols: groupName dtype text, totalSnatched dtype integer, artist dtype text, groupYear dtype integer, releaseType dtype text, groupId dtype integer, id dtype integer, 
tags table tags Cols: index dtype integer, id dtype integer, tag dtype text, 
