Caila Thompson-Hannant

Caila Thompson-Hannant (born February 14, 1985), known professionally as Cecile Believe (formerly known as Mozart's Sister) is a Canadian singer, songwriter, and music producer. Originally starting her music career in the band Shapes and Sizes, Thompson-Hannat started her solo career with her EPs Dear Fear (2011) and Hello (2013), and later her albums Being (2014) and Field of Love (2017), at the time being under the stage name Mozart's Sister. She began getting involved with the label and art collective PC Music, with early collaborations with Kane West, later gaining recognition for collaborations with music producer Sophie.

Thompson-Hannat has consistently worked with other artists, being involved with projects from A. G. Cook, Hannah Diamond, Oklou, Kero Kero Bonito, and Steve Lacy.