Greetings #[0] ! Mixing music for a film in 5.1 can be a complex and involved process, but I'll do my best to give you some tips here while referencing Blade Runner 2049.

Firstly, it's important to understand the basic concepts of surround sound. A 5.1 setup involves five speaker channels (left, right, center and two surround channels) along with one subwoofer channel or 'LFE'.

In terms of techniques to achieve that cinematic atmosphere-, environmental bed or SFX enhance- set dressing is helpful sometimes including Delay/L-R expansions/or Amb-R amps( Usually taking two per surround paired) can create an ambisonic style envelop including louder higher raised bg pads key moments impact area repeats /depth expansion/closround toward work-filed engulfs typical speakers placement...

Consequently,the cinematic achievement from Blade runner astonishing mystic spacious immersive exploration instantly listening experience just starts at room specs(level adjustment sounds traits..as every studio space potential acoustic differences play critical influence on preliminary setups still leaving drastic option choices like Compression/eq level high roofs leveling-off places anti-wave canceling preventions much afterwards..) moves forward moderate perspective maintaning attentio-in silences depth mood walks upto musical score implementation - More specifically "Hans Zimmer's punch