| skos:altLabel | - Hemispheres
- Cygnus X-1
- Cygnus X-1 Book I: The Voyage
- Cygnus X-1 Book II (parts I and IV-VI)
- Cygnus X-1 Book II: Hemispheres
- Cygnus X-1 Book II: Hemispheres – Prelude
- Cygnus X-1 Book II: Hemispheres: Prelude
- Cygnus X-1 Book II: \"Hemispheres\"
- Cygnus X-1 Prologue
- Cygnus X-1: Book I
- Cygnus X-2 EH
- Cygnus_X-1_(song_series)#Book_II:_Hemispheres
- Hemispheres Prelude
- Hemispheres: Prelude
- Cygnus X-1 Book II: Hemispheres - The Sphere (A Kind of Dream)
- \"Cygnus X-1, Book II: Hemispheres\"
- \"Cygnus X-1\" (song series)
- Cygnus X-1 Book I: The Voyage: Part I/The Story So Far (drum solo)/Part III
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