Sexto álbum da banda canadense de Progressive Rock, lançado em 1978.
 
TRACK LIST:
1. Cygnus X-1 Book II: Hemispheres
I- Prelude
II- Apollo (Bringer Of Wisdom)
III- Dionysus (Bringer Of Love)
IV- Armageddon (The Battle Of Heart And Mind)
V- Cygnus (Bringer Of Balance)
VI- The Sphere (A Kind Of Dream)
2. Circumstances
3. The Trees
4. La Villa Strangiato