They released their first EP, Borderline Hymns, in 2003 two years later, Hansson left the band, and was replaced by AnnLouice Lögdlund. The original line-up consisted of singer Lisa Hansson, guitarists Daniel Håkansson and Pontus Mantefors, bass guitarist Anders 'Andy' Johansson, cellist Johannes Bergion, and drummer Andreas Halvardsson.

The band was created in 2003 as a sextet. Debut and The Butcher's Ballroom (2006–2009) Johannes Bergion's cello is one of the defining sounds of the band. The line-up features several instrumentalists uncommon for rock or metal bands, such as a cellist, a trumpeter, and a trombonist, while their albums often prominently feature string and brass sections. The band's style encompasses avant-garde metal, classical, jazz, swing, progressive rock and symphonic metal. They have released five albums: The Butcher's Ballroom (2006), Sing Along Songs for the Damned & Delirious (2009), Pandora's Piñata (2012), Pacifisticuffs (2017), and Swagger & Stroll Down the Rabbit Hole (2021).ĭiablo Swing Orchestra is known for its eclectic sound, mixing numerous influences, most prominently from heavy metal, rock, swing, progressive, and classical, although various other influences are frequently mentioned by critics. They are known for having an eclectic sound, which fuses swing music with symphonic metal and progressive rock, among other genres. Diablo Swing Orchestra, also shortened DSO, is a Swedish avant-garde metal band formed in 2003.

Pinata swing and miss