This is a pretty wild, often punk-intensity, hard-rocking psych-prog release with the odd orchestral and/or synth passage. I could see it appealing to fans of several genres. It was a release on the state Supraphon label, which seems to still be in operation in some form. Lyrics are in Czech; there appears to be a futuristic/space thing going on here but this isn't a language I understand. Since the '60s and up through the Velvet Revolution, Prague has had a reputation for harboring an avant garde arts scene which has crossed over into popular music and included socially relevant bands such as Plastic People of the Universe. That makes the presence of this sort of release less surprising coming from that corner of the world.
There's a whole lot going on with this album and in some ways I feel in hearing this as I did upon hearing Os Mutantes (which this does not sound like) for the first time... a bit pleasantly disoriented, amazed that this exists, that it could be this good and this unknown here mostly because of language, cultural (i.e. the refusal of most English speakers to listen to music in other languages), political and probably economic barriers. Similarly I think the variety of influences is going to make this interesting listening for years to come.
Czech it out.