His musical career spanned more than forty years and he produced over 700 albums and composed scores for about 6,600 songs. Some of his popular melodies include; Lata Walpola's "Punsanda Eliyai",
Milton Mallawarachchi's "Amaran Hengum",
Clarence Wijewardena's "Duwa Ma Wage", Gration Amanda's "Tharu Yaye" and
Nirosha Virajini's "Sigiri Geeyak Obe Hadawathe". In 1981 he composed music for the film
Saranga and then for films including
Soora Saradiel and
Baisikalaya. Peiris was teaching at
St. Anthony's College, Kandy, where
Rookantha Gunathilake was one of his students. Peiris then formed Galaxy, with Gunathilake, Mahinda Bandara and
Keerthi Pasqual. Peiris helped composer
Dinesh Subasinghe at the beginning of his music career in 2000. He has also collaborated with
Pandit W. D. Amaradeva. == Selected compositions ==