1. He was born on April 3, 1955 in Thiruvananthapuram, Kerala. His parents were classical musicians H. A. S. Mani and Alamelu Mani.

2. Hariharan has sung in over 15,000 songs in 10 languages, including Tamil, Hindi, Telugu, Malayalam, Kannada, Marathi, Sinhala, Bhojpuri, Odia, Bengali, Sanskrit, Gujarati, and English.

3. He is considered a pioneer of Indian fusion music.

4. He has more than 30 albums.

5. He won the top prize in the ``All India Sur Singaar Competition'' in 1977.

6. He has formed the band Colonial Cousins in 1996.

7. He has been awarded the Padma Shri and Yesudas Award.

8. He is also an actor, known for Vaaranam Aayiram (2008), Border (1997), and Enthiran (2010).

9. He has been married to Lalitha Hariharan since 1984.