Glass left the electronic group in October (14) and Kath has decided to continue without her, recently releasing new single Frail along with a statement which criticised his former bandmate's contributions.

Glass has now hit back at Kath, sending a series of tweets defending herself, writing, "For the record, I wrote almost all of the lyrics in my former band and the vast majority of the vocal melodies... I was a founding member of Crystal Castles and shaped the sound and aesthetic from the very beginning... Manipulative statements about my contributions to the band only reinforce the decision I made to move on to other things."

She then went on to announce that she will be releasing her own new music in the near future, adding, "I'm excited to share new music with you very soon!"