Simon Wilcox is a songwriter based in Los Angeles, she has written multiple platinum and gold singles, working with artists such as which American singer, songwriter, ambient music composer and YouTube personality?
Simon Wilcox:  She has written multiple platinum and gold singles, working with artists such as Nick Jonas, Enrique Iglesias, Tinashe, Demi Lovato, Five Seconds of Summer, Britney Spears, Fifth Harmony, Poppy, and DNCE, among others. Poppy (singer): Poppy, also known as That Poppy, is an American singer, songwriter, ambient music composer and YouTube personality.
Poppy