Nandasiri first appeared on
Sinhala Radio at the age of 13 in 1955. During this period, he got the opportunity to work with
Madawala S. Ratnayake, Nanda Jayamanne,
Karunaratne Abeysekera and Sanath Wimalaweera. At the age of 17, he began studying the
tabla instrument under D. R. Peiris soon after, where he was Peiris' first student at this class held at the YMBA Hall in Borella. He connected Nandasiri to his various radio and outdoor programs and got to participate in radio folk singing programs once a month. In 1960 at the age of 19, Nandasiri travelled to India to continue his studies at
Bhatkhande Music Institute Deemed University. Nandasiri took the Part I examination in vocal music and obtained first class at the "Nipun" examination in 1992 becoming the first Sri Lankan to achieve this task. In 1979, he recorded his first full album with the same title of his concert "Swarna Kundala" for Gemtone. This included his popular songs "Kisiwak Nokiyana" and "Egodaha Kandey". After that he recorded three major albums for Singlanka 1980 and 1981 which included some of his best known songs such as "Eka Yayata Mal" and "Mama Nam Asayi". In addition, he has recorded songs for films most notably under the music direction of Premasiri Khemadasa. In 2015, Nandasiri launched the 'Prathama Wasanthayai' concert where his daughter Anuradha also sang with Malkanthi Nandasiri. On 11 March 2018, the concert titled 'Du Anuradha' was held at 6.30 pm at Nelum Pokuna Theater. He was appointed
Chancellor of the
University of the Visual and Performing Arts in 2016 by president
Maithripala Sirisena after the demise of
Pandit Amaradewa. On 12 October 2017, an Inquisitive and Aesthetic Book titled "Sinhala Sangeethaye Sanath Nandasiri Sanathana Gee Miyasi' written by Yapa Bandara Seneviratne was released at 4.15 pm at the Colombo Public Library Auditorium. On 24 February 2018, a ceremony was held at the Western Province Aesthetic University Resort Auditorium to pay homage to Sanath Nandasiri with a concert titled 'Ninnada 2018 Thunpath Rata Swara Dehana'. During the event, the President
Maithripala Sirisena presented special honorary award to Nandasiri. On 4 September 2019, a collection of 100 lyrics and chords of Nandasiri's songs titled "Rasanandaya", was released at the Sri Lanka Foundation Institute. In the same year, he was honoured with Janabhimani Honorary Award at the Bandaranaike Memorial International Conference Hall. ==Filmography ==