Charles Massabo, also known as Kallaghan, is a French record producer, songwriter and musician, based in Los Angeles, California, United States,^[1] best known for his work with Falling in Reverse, Metro Station and other projects, such as Ronnie Radke‘s rap mixtape “Watch Me”^[2] and Jacky Vincent‘s solo project. Massabo produced and mixed Davey Suicide “Made from Fire” hitting Billboard charts #3 on Heatseakers,^[3] #14 on independent albums and #24 on top hard rock charts.