Cathy Dennis is a renowned British singer-songwriter and vocal producer. After her debut into the music scene with moderately successful career as a singer, she received great success as a writer of pop songs for many artists, including Kylie Minogue, S Club 7 and S Club Juniors, Britney Spears, Kelly Clarkson and Katy Perry.

Over the last 20 years, she has developed a frequent working partnership and friendship with Bloodshy and went on to write and feature un-credited vocals for his founding groups Bloodshy & Avant, with Pontus Winnberg, and Galantis, with Linus Eklow, She made massive vocal comeback when she featured vocals on Galantis' massive hit “Runaway (U & I)”, alongside Julia Karlsson.