instruction: Let the shortest duration as bar chart's X-axis and the most poorly rated song for each genre as the Y, and list from high to low by the total number.
response: SELECT MIN(T1.duration), MIN(T2.rating) FROM files AS T1 JOIN song AS T2 ON T1.f_id = T2.f_id GROUP BY MIN(T1.duration) ORDER BY MIN(T2.rating) DESC