Ouseppachan was born to Mechery Louis and Mathiri Paliakkara on 13 September 1955 in Ollur, Thrissur, Kerala, India. He completed his formal education from Saint Thomas College, Thrissur. He was interested in music and by the time he finished his formal education, he had become an expert violinist. He started his music career as violinist in some music troupes including Voice of Trichur. Later he got the chance to be the violinist in concerts of renowned playback singer Madhuri. He later became the violinist under music director Paravoor Devarajan master. Then he moved to Madras, Tamil Nadu where most of the recording works of Malayalam films were done. His first work in the film industry was the film Eenam, for which he set the background score. He also composed additional background music for the film Aaravam (1979) in which he also played the role of a fiddle player, however Kathodu Kathoram (1985), directed by Bharathan is considered as his debut.