Christopher "Tricky" Stewart (born January 4, 1974) is an American songwriter, music producer, music publisher, executive producer, recording industry executive and recording studio owner. In a career spanning 16 years, Stewart, at the helm of his company RedZone Entertainment, is responsible for over 25 million records sold. He is noted for producing many hip hop, R&B and pop chart topping singles, such as Beyoncé’s “Single Ladies (Put a Ring on It)”, Britney Spears's "Me Against the Music", Mýa’s “Case of the Ex”, Rihanna’s “Umbrella”, Mary J. Blige’s “Just Fine”, Mariah Carey's "Touch My Body" and "Obsessed", Jesse McCartney’s “Leavin'”,[2] Justin Bieber's "Baby", Ciara's "Ride" and many others. He is currently working on upcoming albums from Ciara, Jennifer Lopez, Pentatonix and Jessica Simpson, among others.

Work with Katy PerryEdit

He worked with Katy Perry on the following songs:

Songs from Teenage Dream (2010) / Teenage Dream: The Complete Confection (2012):

• "Circle the Drain"
• "Dressin' Up"
• "Hummingbird Heartbeat"
• "Pearl"
• "Who Am I Living For?"

Songs currently unreleased:

• "Milk Milk Lemonade"