Stephen Devassy's first major break came when he was aged 18, through Johny Sagarika, for whom he did the music orchestration of six songs on the album Ishtamannu.

An Indian pop band, they released an album titled YehZindagani [10] Stephen, who started performing at a young age, has done the music arrangement for many films.

Some of the films he scored were Majaa, Thambi, Nammal, Azhagiya Thamizh Magan, Hariharan's album, Waqt Par Bolna and so on.

The film "KQ" [12] (2013) by Baiju Johnson, a story of two hard working friends also had a touch of Stephen's music.

Featured on 5Talents Magazine Cover Page With His Life Story – 2013[23] The Icon of Inspiration Music – Behindwoods Gold Mic Award – 2019[24]