Greg's songs have sold more than 20 million units worldwide and have earned him a CCMA Song Of The Year award for his song "Somebody Wrote Love." His songs have been recorded by such major acts as MeatloafCarrie UnderwoodRascal FlattsLeAnn RimesTim McGrawAlan JacksonBrett Eldredge, and Billy Currington. His songs have also appeared in many TV shows and major motion pictures such as Country StrongNew In Town, and Flicka.

Greg was born and raised in Boston, MA. He began playing ragtime piano at the age of 5. He studied neuropsychology at the University of Rochester and University of New Hampshire. After graduation, Greg took a position working in a laboratory at MIT. Greg left his position at MIT and enrolled at Berklee College of Music to study songwriting and commercial arrangement. After Berklee, Greg moved to Nashville and worked as a song plugger on Nashville's legendary Music Row while continuing to write. While songplugging, Greg received several major label cuts on songs he wrote by himself. Greg left songplugging and has been a staff writer for companies such as Warner Chappell, Almo Irving, Famous Music, Sony, BMG, and London-based Southern Crossroads.

Greg has also developed several musicals and in 2017 attended the New York Musical Theater Festival (NYMF) writer’s workshop. His most recent work "Wonder Women The Musical" which tells the true unknown story of the creation of  the DC comics character Wonder Woman was recently named an official selection for the 2018 Atlanta Musical Theater Festival and 2019 Chicago Musical Theater Festival.

Greg is a music, lyricist, and top-line melody writer. He works with producers, artsits, and writers of various genres in Stockholm, London, Berlin, and Los Angeles while residing in Nashville, TN.