Ramanan gained recognition for his role with ‘Poongathaave Thal Thiravai’ in the Tamil film ‘Nizhalgal’, from which he composed over 100 songs with Ilaiyaraaja and sang for composers Vidyasagar, Mani Sharma and Deva.
Ramanan was famous for his famous songs for Ilaiyaraaja, such as ‘Bhoopalam Isaikkum’, ‘Ananda Ragam’, ‘Kanamani Nee Vara’, ‘Pon Mane’, ‘Aagaya Vennilave’ and ‘Sri Ranga Ranganathanin’. He made his debut with a song in ‘Sri Krishna Leela’ in 1977 and his last song was ‘Kannum Kannumathan Kalandachu’ for Vijay’s ‘Thirupachi’.