A while ago, Anthony Paul Kerby, the musician behind The Circular Ruins, released a live-broadcasted album called "The Alchemy Concert" which uses the M42 sound. There is finally a review of it here:
http://www.databloem.com/0_TCR_review5.htm
Heres an example:
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Calibration' opens with cosmic twitters and a low drone. Digital synth 'stabs' punctuate the piece and a fairly free-form, middle- eastern melody adds detail. We could be in a high-tech souk at the furthest reaches of the galaxy! A heartfelt solo takes centre- stage before the rhythmic elements of
the track fade. We close far too soon at just under 5 minutes. 'The Circle of Life' is a dark beast. Menacing drones and a 'heart-beat' rhythm form the back-bone of the piece. This could easily be an 'Alien' type Sci-fi soundtrack. At times sinister 'wails' move from the shadows, it's unsettling
but superb. Radio-tuning noises are added, is it a distress beacon?. Eerie vocal samples close the track. This is music of cinematic proportions.
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You can get it here:
http://www.databloem.com/0_TCR.htm
HIGHLY RECOMMNEDED! One of my fav albums. I also enjoyed star gazing with this one and habve many memories of observing star clusters and nebulas with this music in my head via headphones