The Flower Kings stuff I've heard:
-What you just posted
-The 1996 album Retropolis, which was okay--probably the first "neo prog" album I ever heard (and one of the few decent ones!)
-The 1999 album Flower Power, which was a forgettable two-and-a-half-hour-long explosion of silliness, including the worthless 60-minute song "Garden Of Dreams" which basically existed so they could do a 60 minute song. I listened to it maybe three times and forgot about it
-Nothing else whatsoever
Fronted by Roine Stolt, the central fact of whose life is thus: recording far, far, far too much music.