De Silva became a singer at the invitation of a friend. "Des", as he was known to his fans, launched his career in popular music in
Colombo in 1963, he was the lead vocalist of the Fire-Flies. In 1976 he decided to form his own band, "Desmond and the Clan", which performed in various countries in Southeast Asia, including the
Maldives. He also represented Sri Lanka at the 5th Olympiad of Songs in
Athens,
Greece in 1979 and became the champion and at the
Yamaha Festival of Song in Tokyo, Japan. De Silva also sang record songs and Nadagam songs such as
Raja Sangabo Hisa De Dugiyata,
Muni Nandana Siripada,
Panamure Eth Raja,
Amba Damba Naran,
Budubawa Pathana Vesathuru Nirinda. He launched the first ever Concert for Autism for Sri Lanka in Sydney, Australia on 31 March 2006. ==Personal life and death==