CitySeven’s autumn offering is a soundtrack for the skies of the lengthening nights, as tech whiz Drogo executes a sonic sci-fi fly-by of the Martian moons, “Phobos and Deimos”.

In the encounter with “Phobos”, Drogo’s instrument array reveals a starkly pitted beatscape, the precise periodicity of the percussion and bareness of the bass perturbed and disturbed by background noise, irregular oscillations and sudden transmission bursts.“Deimos” boosts us into an uptempo orbit, the gliding and looping bass figure setting off chirping satellite chatter and glittering starlight harmonies.

CitySeven’s science officer Dubb Disko transits the dark side with his remix of “Phobos”. Flattened frequencies, fragmentary signals, metallic melodies, sombre vocalisations and propulsive bass feed back with ever-increasing momentum till they converge in a mighty cosmic counterpoint.

In another visit to Phobos, Several Definitions (Keith, formerly of “Radi and Keith”) brings some brass-robot retro to the narrative, with a relentless steam-powered rhythmic contraption that drives dancefloor sirens and horns in automated intonations of the harmonic series.