Cygnus X-1 (song series)

"Cygnus X-1"
Limited edition EP cover
Suite by Rush
from the album
A Farewell to Kings (Book I)
Hemispheres (Book II)
Released
  • August 29, 1977 (1977-08-29) (Book I)
  • October 24, 1978 (1978-10-24) (Book II)
Genre
Length
  • 10:25 (Book I)
  • 18:07 (Book II)
  • 28:32 (both songs)
LabelMercury
Composer(s)
Lyricist(s)Neil Peart
Producer(s)
Rush suite chronology
"2112"
(1976)
"Cygnus X-1"
(1977–78)
"La Villa Strangiato"
(1978)

"Cygnus X-1" is a two-part song series by Canadian progressive rock band Rush. The first part, "Book I: The Voyage", is the last song on the 1977 album A Farewell to Kings, and the second part, "Book II: Hemispheres", is the first song on the following album, 1978's Hemispheres. Book I is ten minutes and twenty-five seconds long (10:25), and Book II is eighteen minutes and seven seconds (18:07).

It was released as a limited-edition extended play on April 22, 2017 for Record Store Day.