Thank you!  Can you show me the total number of occurrences for Purchased AAC as the media type?
SELECT T1.Name,count ( * )  FROM MEDIATYPE AS T1 JOIN TRACK AS T2 ON T1.MediaTypeId   =   T2.MediaTypeId GROUP BY T2.MediaTypeId ORDER BY COUNT ( * )  ASC LIMIT 1
total number of occurrences refers to COUNT(*); Purchased AAC as the media type refers to filtering by specific media type name;