Gabriel Byrne menacingly leans in towards an associate and sneers: “If we don’t continue to broker cocaine, this company ceases to exist”. This is the tone of the gritty new Italian crime drama ZeroZeroZero, and is the kind of intimidating high tension that Mogwai have become experts in providing sonic atmospheres for. Alongside their standalone work, Mogwai have created a prolific reputation for producing soundtracks for  films and documentaries over the years. These projects, including Zidane: A 21st Century Portrait, Les Revenants and the excellent Atomic documentary, often stand up next to their full release LPs in terms of quality, sometimes even above…