Sri. H K Roshan Kumar is a software engineer in California. He is giving concerts in the USA. He is also conducting workshops in Carnatic music for the Americans. Two newspapers, The Herald Journal, and the Utah Statesman have published full-page articles. His brother H K Shyam Kumar is also a Vocalist. Shyam and Roshan are the sons of Keshava Kumar and Shakuntala Devi. The brothers say that their father is their first guru. In fact, Mr. Keshava Kumar himself is a reputed singer. He was an AIR artist during the seventies and eighties. The Kumar brothers are specialists in singing "devaranamas". They have given many of Carnatic music programmes in Bangalore. They have also performed at the Sri Rama Navami Music festival, at the Fort High School grounds.