Ros Saboeut ( c. 1942 – March 5 , 2014 ) was a Cambodian activist known for working on behalf of that country 's musicians . Saboeut was one of five siblings born to her parents , Ros Bun and Nath Samean . Her younger sister was singer Ros Serey Sothea . In the 1960s , Cambodian Head of State Norodom Sihanouk , a musician himself , encouraged the development of popular music in Cambodia . This inspired a flourishing rock music scene based in Phnom Penh , in which Sabouet 's sister Sothea achieved great fame and influence . This music scene was abruptly crushed by the Khmer Rouge communists in 1975 . Saboeut survived the ensuing Cambodian genocide , but her sister Sothea disappeared and is presumed dead , as is the case with many of Sothea 's contemporaries in Cambodian popular music
Cambodian genocide
Cambodian genocide
Ros Saboeut