What is the music used in the Frozen Synapse Trailer?
Solution 1:
From the description here:
Trailer music is by nervous_testpilot and is available as part of the Frozen Synapse Soundtrack Bundle.
The music is written in-house, and will be featured in the game.
Solution 2:
This is a section of the track Welcome to Markov Geist, produced by Mode7 Games' in-house musician and studio co-owner nervous_testpilot.
It can be purchased on its own, as part of the game's official soundtrack, or included in the Soundtrack Edition of the game.