Disambiguation; There are 8 Groups with the same name.
1) A death metal band from Poland started in 2004;
2) A rave/happy hardcore group from The Netherlands, popular in the Mid-Nineties. Critical Mass was formed in 1994 by Ed Bout and Dave Hasselaar. ID&T records (the centre of hardcore at that time) wanted a live act. At the beginning both producers where the act by themselves but not much later they integrated the singer Ludmilla Odijk and rapper Danny Haenraets alias MC Energy. At the end…
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