Sydney is an LA-based composer who has written music for numerous feature films, short films, and television shows, and also writes for Velvet Green Music, Chroma Music, and various other production music companies. She has worked for composer John Powell on Jason Bourne as well as at Hans Zimmer's Remote Control Productions, and also completed a fellowship with composers Chris Lennertz and Tim Wynn at Sonic Fuel Studios.

She is a graduate of Boston's Berklee College of Music, where she received Berklee's Georges Delerue Scoring Award and Scholarship.