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Bengt Ollén is a Swedish choral conductor, music teacher, adjudicator and lecturer. In 1995 Ollén founded Sofia Vokalensemble that has emerged as one of the world's leading amateur choirs. From Wikipedia (https://en.wikipedia.org/wiki/Bengt_O...) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/b...)
