[5] His family moved to Batugedara, Ratnapura, and Clarence abandoned a budding career as a planter to pursue music full-time.

Wijewardena died on 13 December 1996, at the age of 53, in Sri Lanka after a long struggle against ruptured gastric ulcers and gangrene due to acute diabetes.

[7][5] Managed by an advertising icon, Sri Sangabo Corea, the group recorded several songs, which aired on the Saturday Star program in 1966.

[9] In 1969, the Moonstones welcomed female vocalist Indrani Perera who sang lead on the best selling hit Dilhani.

Wijewardena himself only sang lead on Dileepa Podi Puthu an adaptation of a poem written by Karunaratne Abeysekera to his son.

[5] After evaluating Bharati's performance for one year, Wijewardena decided to enter him into the Sinhala pop music scene.

Wijewardena composed Ada Wei Iru Dina for Bharati which became an all-time hit followed by the lovely Christmas song Bethlehempure and Maa Adarai Nangiye.

[10] Clarence offered him another all-time hit Tikirimalee with Ma Mulin Liyu Pem Pathe, Desa Vidala, Bambaraku Aduna, Sarojini and Iru Dina Pamanak.

[9] Also he used two guitar players to play lead parts and counterparts of songs such as Sumudu Mal Pipinu and Dileepa Podi Puthu.

He was the composer and the music director for all the six songs of Susima teledrama,[11] including Desa Piyagath Kala sung by Jackson Anthony and George Senanayake.

He also composed and music directed the song Daesawan Dase which says about child abuse and other prohibited things happen in present society.

His first solo is Dileepa Podi Puthu was written by Radio Ceylon broadcaster, Karunaratne Abeysekera for his own son.

He composed and directed music a song named as Maha Balwathune for the conference of the Non-Aligned Movement held in 1975 in Sri Lanka.

Former Prime Minister Mrs Sirimavo Bandaranaike arrived as the chief guest for the opening ceremony of Ceramic Corporation.

[9] In the early 1970s, Wijewardena invited Vernon Corea who had mentored him from the start to write the notes on a Lotus LP sleeve.

[8] These jingles were Elasto, Bata, Astra Margarine, Bristol Cigarettes, Arpico, Dot Toffee, Singer, Edna Chocolate, Thultex, Ice-Cream Soda, Development Lottery, Dasuna Cartoon Paper, Atlas pens, Orex pens, Building Materials Co-operation (in Sinhala and English), Keels and Health Joy Soap etc.

[citation needed] He formed the Sri Lankan band "Madhara" in 1985 with Rookantha Gunathilake (keyboards), Mariazelle Goonetilleke (keyboards/female vocals), Raju Bandara (lead guitar), Keneth De Silva (bass guitar), Ajantha Dodampegama (drums) and rest of the other members of the group.

The song "Thana Nilla Dige" performed by Saman De Silva became a hit during the season of Test cricket and every big match in Colombo.

[8] However, due to the popularity of his songs which has grown since his death, they have also become the subject of a lawsuit over illegally recorded renditions sampled by other Sri Lankan artists.

In 2001, Wijewardena's widow Sheela filed suit against Rajiv Sebastian,[13] hoping to recover a portion of the income earned through the use of her late husband's work.

The songs such as Rasa Pirunu Katha, Geeyakin Kese, Eatha Ran Wiman Yowun Sihina Loke, etc.