How many movies have Ilaiyaraaja and Raghuvaran collaborated on?

They have worked on 21 movies together! Their first movie together was Oru Odai Nadhiyagirathu (1983) while their highest rated movie together was Poovizhi Vasalile (1987). They have not worked together since Kasthuri Maan (2005). They are most known for their drama films together.