Complex sentence: As a music composer, he started with Bengali plays, "Sati Tirtha" and "Janani", and eventually gave his first score in film, "Rajgee" in 1937, his second film "Rajkumarer Nirbashan" (1940) became a hit.
Split into simpler sentences: As a music composer, he started with the Bengali plays "Sati Tirtha" and "Janani", and eventually gave his first score in the film "Rajgee". In 1937, his second film "Rajkumarer Nirbashan" (1940) became a hit.