Arch Enemy is a Swedish melodic death metal band, originally a supergroup from Halmstad, formed in 1995. Its members were in bands such as Carcass, Armageddon, Carnage, Mercyful Fate, Spiritual Beggars, The Agonist, Nevermore, and Eucharist. It was founded by Carcass guitarist Michael Amott along with Johan Liiva, who were both originally from the death metal band Carnage. The band has released eleven studio albums, three live albums, three video albums and four EPs. The band was originally fronted by Johan Liiva, who was replaced by German vocalist Angela Gossow in 2000. Gossow left the band in March 2014 to become the group's manager and was replaced by Canadian vocalist Alissa White-Gluz.

Melodic death metal is a subgenre of death metal that employs highly melodic guitar riffs, often borrowing from traditional heavy metal. The genre features the heaviness of death metal but with highly melodic or harmonized guitar riffs and solos, and often features high-pitched shrieked vocals alongside the low-pitched growls commonly featured in traditional death metal. Pioneered by the English heavy metal band Carcass with their 1993 album Heartwork, melodic death metal developed further in Sweden in the mid-1990s. The Swedish death metal scene did much to popularise the style, soon centering in the "Gothenburg metal" scene. At the Gates' Slaughter of the Soul, Dark Tranquillity's The Gallery, and In Flames' The Jester Race, all released in the mid-1990s, were highly influential albums in melodic death metal, with At the Gates and In Flames being the two most common influences on North American 2000s heavy metal bands. Many American heavy metal bands emulated At the Gates' sound, resulting in the usage of the phrase "At the Gates worship".