Originally a solo artist, she found success as part of the writing production trio the Matrix.
[1] Christy studied at the Bush Davies Ballet School as a child, before she decided to become a musician.
[3] Alongside creative partners, Christy's then-husband Graham Edwards and Scott Spock, the trio wrote and produced Avril Lavigne's debut album Let Go which included three international number one hits – "Complicated", "Sk8er Boi" and "I'm With You" – selling 20 million copies.
[3] The Matrix has worked with artists such as Avril Lavigne, Jason Mraz, Shakira, Korn, David Bowie, Christina Aguilera, Britney Spears, Hilary Duff, Busted, Tokio Hotel and Rihanna.
[citation needed] Her solo songwriting work includes Enrique Iglesias's "Tonight (I'm Lovin' You)", Kelly Clarkson's "I Forgive You", Jason Derulo's "Breathing"; Leona Lewis' "Your Hallelujah"; Ricky Martin's "Liar"; Chris Brown's "Time For Love"'; Jamie Foxx's "Baby's In Love"; Dua Lipa's "Blow Your Mind Mwah"; and Bebe Rexha's "I Got You" and "Busted".