He composed Karuna Nadee, a Buddhist oratorio,[1] and re-introduced a lost, ancient musical instrument known as the ravanahatha to Sri Lanka.

[4][6] In 2015-2016 Dinesh received Sri Lankan attention for the film score of Ho Gaana Pokuna children movie.

He studied music under Samantha Amarajeewa, Janaki Disanayaka, Christal Luduwike, and Patrick Master at his school and in the city.

[16][17][18] Subasinghe worked under the Sri Lankan composer Premasiri Khemadasa for eight years and led the orchestra for Khemdasa's opera Agni (2007–2008).

From 2001 to 2005 he was a member of Sri Lankan musical groups led by Dumindu Kadigamuwa, Harsha Bulathsinghala, Janananth Warakagoda, and Dilup Gabadamudalige.

He performed a leading role on his music video E Kale: The One and played King Herod Antipas in the 2013 Paasku television series by Prem Fernando.

Dinesh got the temporally Membership of the Union and played for many south Indian & Bollywood movie background music scores as a violinist.

[20] Rhyme Skool with Katrina Kaif in KM Music Conservatory Chennai Dinesh worked with his former principal A.R.

[48][49][50] AGBU in Armenia (2015) Dinesh participated an Armenian music program in Armenia which was organised by AGBU (Armenian General Benevolent Union) in 2016.,[51][52] 'T(H)REE'-A Musical Journey From Portugal To Asia (2016/17)' Dinesh has taken part in an audio album which was a collaboration with Portugal's pop band Cla.

[53][54][55][56] Chan & Tea Concert with Chinese Buddhist musicians (2016) He composed a ballad theme music for Sri Lankan act in the 'Chan and Tea' concert at Nelumpokuna in 2016, Choreography part has been created by Ravibandu Vidyapathi, the program was a presidential event to enhance spiritual development between China and Sri Lanka.

[59][60] The ravanahatha (ravanhatta, rawanhattha, ravanastron, or ravana hasta veena) is a bowed fiddle popular in Western India.

[61][62] Ravana Nada is the first recording to include music played on the ravanahatha,[28] although it had appeared in films as a visual item.

[28][65] He has mentioned to the media that the instrument is discussed the book by Abele and Niederheitmann translated by John Broadhouse The Violin: Its History & Construction, Illustrated & described, From Many Sources published by William Reeves in London between 1900 and 1930.

[28] Subasinghe's version of the ravanahatha has been referred to by Michael Ondaatje the Canadian novelist and poet who won the Booker Prize for his novel The English Patient.

[66] Subasinghe's Rawan Nada album set a record as the highest selling instrumental music CD in Sri Lanka.

[69] Buddhist texts have also been incorporated into two other western oratorios, Somei Satoh's 1987 Stabat Mater and Jonathan Harvey's 2011 Weltethos.

[70][71] The oratorio consists of 12 pieces of music and, according to the Daily News, is composed in "Far Eastern, Sri Lankan, Indian, and Western classical styles".

[5] Buddhist monk Athuraliye Rathana Thero and Negombo astrologer Ranushka Fernando contributed ideas to the conceptualization of the work.

[78] Subasinghe created the music for the passion play Aho mage senageni performed in 2003 and 2007 in Helpe, Katana near Negombo.

Subasinghe composed the music for the 2013 television film based on the life of Jesus, Jesu Christu Yuga Peraliya, produced by Prem Fernando.

[39] and Sumathi Awards in 2012 for Pinsara Dosthara, a Sri Lankan adaptation of Strange Case of Dr Jekyll and Mr Hyde.