Khaos Legions is the eighth studio album by Swedish melodic death metal band Arch Enemy. It was released on May 30, 2011, by Century Media. The record marks a return to new, original material, after releasing the Tyrants of the Rising Sun - Live in Japan live CD/DVD (2008) and The Root of All Evil (2009) which consisted of a selection of re-recorded songs from the band's back catalog. It is the band's ninth album counting the compilation. Khaos Legions debuted at number 78 on the Billboard 200, selling around 6,000 copies. This surpasses both Doomsday Machine and Rise of the Tyrant, making it the band's highest-charting effort so far. The album's single is "Yesterday Is Dead and Gone", and music videos have been released for "Yesterday Is Dead and Gone", "Bloodstained Cross", "Under Black Flags We March" and "Cruelty Without Beauty". This would be the band's last album with founding member and guitarist Christopher Amott before he parted ways with the band for the second time in March, 2012 to be replaced by former Arsis guitarist Nick Cordle. Also the last album with singer Angela Gossow before she stepped down as vocalist in March, 2014 to be succeeded by the Agonist singer Alissa White-Gluz. Background and development The album was produced by Arch Enemy and Rickard Bengtsson, who had previously worked with the band on their 2005 album Doomsday Machine. Recording sessions took place at the Sweet Spot Studio, Sweden. The mix was done by Andy Sneap in Derbyshire, England. Drummer Daniel Erlandsson said about the album: In January 2011, UK's Bonkers Entertainment caught up with the band at their headline show at the HMV Forum in London UK on November 27, 2010. This concert was the last stop on a three-year-long touring cycle for the "Rise Of The Tyrant" and "The Root Of All Evil" albums and in the interview the members of Arch Enemy discussed the upcoming recording of the new studio album, the song writing process and touring plans for 2011. During the conversation, the band also divulged the title of the new album to be "Khaos Legions". This is the first (and only) Arch Enemy album to have lyrics written entirely by Angela Gossow, instead of a collaborative effort between her and Michael Amott. Lyrically the album focuses on various political and social themes like religion in the song "Bloodstained Cross", animal testing in "Cruelty