1. Ilayaraja is not only a great musician but also a good novelist and poet.

2. In the song "Raja... rajathi rajan indha raja" from the film Agni Natchathiram, no string instruments used at all. Its just the vocal humming used during composition. The song opening stanza is composed with just 2 notes.

3. Kamal Hassan for the movie Hey Ram went for a different music director, who needed to be replaced due to some issues. Ilayaraja used the scenes made without using the earlier music. Saved a huge money for Kamal Hassan

4. Ilayaraja was the first Music director to have a Standing tall Cut-out equal to the hero Rajnikanth during the release of Murattukkaalai

5. layaraja is a great follower and worshipper of Lord Ramana Maharishi and Thaai Moogaambikai

6. Ilayaraja is the very few composers who write the notes first and then play to hear it.