Crystal Castles are an experimental electronic band which formed in 2003 in Toronto, Ontario, Canada and currently consists of producer Ethan Kath and vocalist Edith Frances.
They are named after the lyrics "The fate of the world is safe in Crystal Castles" and "Crystal Castles, the source of all power" both from the theme song for She-Ra's fortress.
In 2004 Ethan gave Alice 60 instrumental tracks and in April 2005 she recorded vocals over five instrumentals.
After being posted online, this track garnered attention and the duo decided to re-form for a formal release.
When Kath collaborated with singer Alice Glass on some songs in spring 2005, Crystal Castles' lineup was complete.
One of the songs the pair recorded, "Alice Practice," was something of an accident: it was intended to be a demo of Glass testing out a microphone, but its presence on My Space piqued record labels' interest.
Crystal Castles are known for their chaotic live shows and lo-fi melancholic homemade productions.
They released many limited vinyl singles between 20 before releasing a trilogy of critically acclaimed albums between 20.