On the 14th of October 1960, Ren. Sonam became the first among Lepcha people to air his voice on All India Radio. In 1963, he staged his first Musical, “Teesta Rangeet” in Lepcha language. He has composed and compiled numerous Lepcha songs, researched on Lepcha musical instruments, and presented dance-dramas based on Lepcha folklore. He has also published “Vom Jat Ling Chhyo”, a book of Lepcha folk songs in 2011.