In Die Nacht, and the fourth, Litia, so that just leaves Spät-Europa to post someday.
Gaahh, bloody Spät-Europa... it was the first of all of the four that I bought, but every time I try to give its gleefully obnoxious 20 tracks an airing it still just ends up annoying the crap out of me. Which probably means I do actually like it, in much the way that Tietchens may have intended. But anyway, for now, here's the somewhat more accessible 16 tracks of Biotop. Tietchens certainly gave his Zeitzeichen project a memorable curtain-raiser with In Die Zukunft, sounding like the theme to a suitably futuristic sci-fi movie, especially in its wonderful, propulsive second half.
From there in, the electro-weirdness just gets dialed up to the max, sounding like a hyper-caffeinated version of Cluster's largely energy-deficient release from the same year. The garish album cover couldn't be more perfect for the music it contains, and fluent German speakers (i.e. not me) will probably get the most out of what seems to be an overriding concept of mocking contemporary consumer society, in the punning track titles and the satirical vocals on Moderne Arroganz, the lyrics of which are apparently a list of different types of insurance.
Biotop does eventually wind down to offer a bit of respite in the gorgeous, melodic penultimate track Träumchen Am Fenster, before ending on the beatless title track. Biotop, the track, points both backwards to Tietchens' first (pre-Sky) LP Nachtstucke and forwards to the more avant-garde stuff to come. As he says (in German) in the final moments, which formed a lock-groove on the original LP, "Let's see how things go".