text: There have been positive retrospective reviews. Lindsay Planer from AllMusic gave the album four-and-a-half out of five stars and said its songs "underscore the solid foundation of complex jazz changes with heavy electric rock & roll that the band so brazenly forged on the first set". Jim Beviglia, writing for American Songwriter, said, "50 years after its release, Chicago II still stands as the one of the band’s signature achievements. ...Listening to Chicago II now, it is remarkable just how smoothly the various pieces blend together."
  Accolades
  Other honors
  1970: Chicago, Best Album of 1970, Cash Box
  1971: Chicago, Best Small-Combo LP, Playboy Jazz & Pop Poll
  Track listing
  Personnel
  Chicago
  Peter Cetera – bass, vocals
  Terry Kath – guitars, vocals
  Robert Lamm – keyboards, vocals
  Lee Loughnane – trumpet, vocals
  James Pankow – trombone
  Walter Parazaider – saxophone, flute, clarinet, vocals
  Danny Seraphine – drums, percussion
  Production
  James William Guercio – producer
  Peter Matz – orchestration on "Prelude"
  Donald Puluse – engineer
  Brian Ross-Myring – engineer
  Chris Hinshaw – engineer
  Nick Fasciano – cover art
  John Berg – cover design
  Herb Greene – photography and poster photos
  2002 reissue
  Paul Klingberg – remixing
  John Kellogg – remix producer
  Joe Gastwirt – remastering
  David Wild – liner notes
  Charts