Johannes Bergion
Johannes Bergion is a Swedish cellist, songwriter and backing vocalist, most known for being one of the founding members of avant-garde metal band Diablo Swing Orchestra. He also played cello in various Hellsongs albums, and in the In Flames album "Sounds of a Playground Fading". Bergion is credited as one of the writers/composers of Diablo Swing Orchestra. However, according to Daniel Håkansson, the songs are mostly written by Håkansson and Pontus Mantefors.