From the gothic vibe of Underworld: Evolution (2006) to the industrial thrum of Live Free or Die Hard (2007), high-octane sounds have dominated Hollywood composer Ceiri Torjussen’s career. The recently released third season of Delhi Crime was new terrain for him. “This season deals with a sex-trafficking gang. So, I had to figure out a sound that encapsulated the horror they wrought,” he reflects.

The Welsh-born, Los Angeles-based composer returned to the Netflix series after scoring for the second season. But the Shefali Shah and Huma Qureshi-led third edition demanded a different soundscape. The result is a synth-driven, bass-heavy motif — built around the show’s antagonist Badi Didi, played by Qureshi — that depicts her power and cruelty. The music for the young girls, on the other hand, required a different emotional register. Torjussen explains, “Their sound needed to be sad, tragic, and unsettling.”