He was born on 10 April 1966 in Kolonnawa. His father L.K Jinadasa Wickramasinghe and mother Aryawathi Chandralatha both were music teachers. His parents were largely involved with many of musical programs in Sri Lanka. Therefore, he used to practice sing and play whatever his parents did during their rehearsals. It is during those days his potential of singing and playing instruments were discovered by his parents.
In 1972, he was studying at Ashoka Kanishta Vidyalaya, Maradana and after passing the grade 5 scholarship, he attended Ananda College and studied there up to grade 10. Then he had to study at Anuradhapura Central College as his parents had got an unexpected transfer to Anuradapura. In the school, he was engineering oriented and studied mathematics for G.C.E A/Ls. Later on he followed a civil engineering course and specialized in building construction.
Wickramasinghe fulfilled his music knowledge following Sangeeth Visharada Part 2 and Diploma in music (vocal), Bathkande institute of music, Lucknow, India. As well, he did Prathama Examination Music (Instrumental) Thabla, at Bathkande institute of music. He was student of western music Trinity College of London.
In the year 2000, he got married with Gayani Kohona and is the father of one son and two daughters: Thidas, Sirini Suhansa and Asini Ashcharya.