The band Oneiros from north-west Germany exists since 1999, however it was founded under the name "Slaves Of Cruelty". In 2004, the band renames itself into "Oneiros" (which until then has been the name of the bassist's former side-project), after expiriencing several changes within their lineup, what also induced different musical influences. During time, there have been 15 different musicians playing in the band, whereby 8 of them now form their current lineup.

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