How many movies have J Duraisamy and M. S. Viswanathan collaborated on?

They have worked on 7 movies together! Their first movie together was Kudiyirundha Koyil (1968) while their highest rated movie together was Apoorva Raagangal (1975). They have not worked together since Thanneer Thanneer (1981). They are most known for their drama films together.