Find the top 3 artists who have the largest number of songs works whose language is Bangla.
SELECT T1.artist_name FROM artist AS T1 JOIN song AS T2 ON T1.artist_name  =  T2.artist_name WHERE T2.languages  =  "bangla" GROUP BY T2.artist_name ORDER BY count(*) DESC LIMIT 3
top 3 artists with the largest number of songs in Bangla refers to LIMIT 3; counting number of songs by artist in a specific language refers to COUNT(*) GROUP BY artist_name WHERE language = 'bangla';