Provide the name of artists who had no more than 100 downloads and are tagged "funk" in 1980.
no more than 100 downloads refer to totalSnatched ≤ 100; groupYear = 1980; tag = 'funk';
SELECT T1.artist FROM torrents AS T1 INNER JOIN tags AS T2 ON T1.id = T2.id WHERE T2.tag = 'funk' AND T1.groupYear = 1980 AND T1.totalSnatched <= 100