Either Prog is getting more metal (Pendragon Pure), or metal is getting more Prog (Opeth)
Either way, this offerring by Riverside sits firmly in the middle of both camps.
This is not an album to draw conclusions from on first listen. For a start the first track is on first listening extremely heavy, and may well set a tone in the listeners ear that will either put them right off or create the wrong expectation for the rest of the album.
However, back to track 1 later.
It is also true to say that if you approach this album expecting a Floyd album, then think again. Floyd influenced yes, but not a floyd album by any means.
If you have not already listened to this album, for a more realistic appraisal I'd recommend starting with track 3, them 4, then 5, then 2, the back to 1.
After listening to the entire album about four times now I feel I can review it with more of a general overview.
To me it is closer to Opeth / Porcupine Tree / Pink Floyd than Dream Theater.
By Floydish I mean "Animals" period floyd. The keyboards are very floydy (organs / piercing synths / trancy sounds)
The guitar work reminds me of floyd influenced Opeth mixed in with Metal (complete with squeaky acoustic).
The drum and bass sound is deep as the deepest ocean and utterly brilliant.
Musically it's tinged with Eastern sounding scales, with very proggy influences, and a LOT of metal sounding riffing, but not exclusively so. Think Careful With That Axe Eugene, but metal style explosions.
Vocally it sounds a bit like Proc Tree, and the singer sounds like he has been getting English elocution lessons from Sophie Ellis Bexter.
In short, don't be put off by that first track. On 4th listening, although metal, it is very prog.
My one criticism is that it feels like track 6 is missing.
Brilliant. More please.