Serpent Sin is a German Progressive metal band, with elements of power metal and heavy metal. They were formed in 2009. In 2012 they released an EP titled Swamp of Human Chasms. Their current lineup features: Martin "Mad" Pirner (Vocals), Phil Carroll (Guitars), Chris Stark (Bass), Mo Fischer (Keyboards) and Eldo (Drums). - Biography by DippoMagoo, November 2014