What key details about johannes bergion  can be extracted from the following bio?  Bio: 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 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 .
The answer to this question is:
- instrument is cello , vocals- caption is diablo , with johannes bergion in the middle . swing orchestra at the global east rock festival- origin is söderköping , sweden- genre is avant-garde metal- name is johannes bergion- background is non_vocal_instrumentalist- image is diablo -lrb- 1 -rrb- . jpg swing orchestra at global east rock festival 2010- associated acts is diablo swing orchestra , hellsongs