question: What are the top 3 artists with the largest number of songs in the language Bangla?
#1 return artists 
#2 return songs of #1 
#3 return #2 in the   language Bangla 
#4 return the   number of  #3 for each #1 
#5 return the   top 3 highest of #4 
#6 return #1 where #4 is  in #5