Signum is the name for two Dutch producers, Pascal Minnaard and Ronald Hagen, who create and remix mainly trance music. Since 2007, Signum has been Hagen's solo project.
From Wikipedia (https://en.wikipedia.org/wiki/Signum_(musical_group)) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/legalcode)