Colleen Fahey is US Managing Director of Sixième Son, the world's leading audio branding and sound design agency. Throughout her career, Colleen has worked for major marketing orga...ver maisColleen Fahey is US Managing Director of Sixième Son, the world's leading audio branding and sound design agency. Throughout her career, Colleen has worked for major marketing organizations on some of the leading brands in the US, Europe, Latin America and Asia.ver menos