Original sentence: In his spare time, Sterling likes to play guitar and can sing.Knight has two younger siblings, Spencer and Scarlett.Knight played guest roles on Hannah Montana,  The Closer and Grey's Anatomy before starring in the Disney Channel Original Series, Sonny With a Chance as Chad Dylan Cooper.Sterling is roommates with "High School Musical 3: Senior Year" star Matt Prokop
Edited sentence: Knight played guest roles on Hannah Montana and Grey's Anatomy before starring in the Disney Channel Original Series, Sonny With a Chance as Chad Dylan Cooper