This is one of the best releases of symphonic progressive rock from the 80s. Solaris is a Hungarian band that favours arrangements over individual instrumental virtuosity. Not that the musicians aren't good, it's just that there isn't a Yngwie Malmsteen, Rick Wakeman or Neil Peart in the bunch.
There are no vocals unless you count the "Martian sounds" near the beginning of this album, and the lead switches between guitar, synthesizer (mostly digital synth with what sounds like moog) and flute. The first twenty minutes or so make up the "Martian Chronicles" Parts 1-6, split into three tracks. Compositionally, it is the strongest part of the album. The remainder has some great stuff ("Undefeatable") and some less memorable stuff (the bonus tracks at the end), but no real moments of weakness.
The music sounds like Wish You Were Here-era Floyd or possibly Pulsar, but with a more "classical" approach at times. Rhythmically simple, the beat seldom leaves 4/4. That doesn't make the melodies and arrangements any less memorable, though. I'd compare it to a Tony Banks keyboard solo.. you know there are better keyboardists around but he has a way of getting the most out of the chops he has.
For RIO fans, this stuff might be too simplistic. Symphonic fans who suffered through the 80s will be scratching their heads wondering how they missed this one.