Crystal Castles was a Canadian electronic music group formed in 2006 in Toronto, Ontario, formed by songwriter-producer Ethan Kath and singer-songwriter Alice Glass, who later left and was replaced by Edith Frances. Crystal Castles were known for their chaotic live shows and lo-fi melancholic homemade productions. They released many limited vinyl singles between 2006 and 2007 before releasing four studio albums between 2008 and 2016.

Claudio Paolo Palmieri, known professionally as Ethan Kath, is a Canadian musician. He was the co-founder and songwriter/producer for Crystal Castles and bassist of Kïll Cheerleadër and Die Mannequin.