title: Heart of Darkness (Grave Digger album)
text: # Heart of Darkness (Grave Digger album)
  
  Heart of Darkness is the sixth studio album by German heavy metal band Grave Digger. They showed a much darker and more aggressive sound with this release than any of their previous albums. All of the songs have dark, lyrical concepts such as hate, death, betrayal, etc. The title track is inspired by the Joseph Conrad's novella Heart of Darkness. A music video was made for "Circle of Witches".
  
  ## Track listing
  
  All lyrics written by Chris Boltendahl and Tomi Göttlich, except where noted; All music written by Chris Boltendahl and Uwe Lulis except where noted.
  
  The limited edition release is limited to 6,666 copies.
  
  ## Credits
  
  ### Band members
  
  * Chris Boltendahl - vocals
  * Uwe Lulis - guitars
  * Tomi Göttlich - bass
  * Frank Ullrich - drums
  
  ### Additional musicians
  
  * Peter Diersmann - backing vocals
  * Michael Seifert - backing vocals
  * Rudy Kronenberger - keyboards
  * Konzertchor Koln - choir on "Heart of Darkness"
  
  ### Production
  
  * Mathias Bothor - photography
  * Marc Manthey - engineering, mixing (choirs) on "Heart of Darkness"
  * Tomi Göttlich - producer (lead vocals)
  * Chris Boltendahl - producer, cover concept, engineering, mixing (choirs) on "Heart of Darkness"
  * Uwe Lulis - engineering (additional overdubs), producer
  * Suno Fabitch - engineering, mixing
  * John Cremer - mastering
  * Andreas Marschall - cover art
  