Ravi Varman Thampi better known as Irayimman Thampi was a famous Carnatic musician as well as a music composer from Kerala, India.
He was a vocalist in the court of Swathi Thirunal. His compositions are still considered extremely popular and are sung by Malayalees all around the world. One of his best known songs is the lullaby.
Irayimman Thampi wrote the famous lullaby Omanathinkal Kidavo for Swathi Thirunal, Swathi Thirunal affectinately called him Thampi maman.
Web : http://www.swathithirunal.in/composeres/iryimn.htm