title: Mental Vortex
text: # Mental Vortex
  
  Professional ratings :
  
  | Review scores ||
  | - | - |
  | Source | Rating |
  | AllMusic | |
  | Collector's Guide to Heavy Metal | 9/10 |
  
  Mental Vortex is the fourth album by the Swiss thrash metal band Coroner, released on 12 August 1991.
  
  ## Musical style
  
  Mental Vortex sees Coroner continuing the experimental formula from its predecessor No More Color (1989), showcasing a mixture of thrash metal with progressive, jazz fusion and avant-garde influences, while "unbridled speed and aggression were replaced by highly technical and unconventional songwriting".
  
  ## Reissues
  
  After being out of print for many years, Noise/BMG reissued the album in 2018, remastered with the same track list in a digipack cd case, with additional photographs of the band and memorabilia.
  
  ## Track listing
  
  All lyrics are written by Marquis Marky, except where noted.
  
  ## Personnel
  
  ### Coroner
  
  * Ron Broder (as Ron Royce) – vocals, bass
  * Tommy Vetterli (as Tommy T. Baron) – guitars
  * Marky Edelmann (as Marquis Marky) – drums, cover concept and design
  
  ### Additional musicians
  
  * Kent Smith – keyboards
  * Janelle Sadler – backing vocals
  * Steve Gruden – backing vocals
  
  ### Production
  
  * Tom Morris – producer, engineer, mixing
  * Sven Conquest – second engineer
  * Karl-U. Walterbach – executive producer
  * Martin Becker – photography (cover and sleeve)
  * Maren Lotz – typography
  * Robbie Müller – digital image
  