Graham William Nash (born 2 February 1942) is an English singer-songwriter and musician. Nash is known for his light tenor voice and for his songwriting contributions as a member of the English pop/rock group the Hollies and the folk-rock supergroups Crosby, Stills & Nash and Crosby, Stills, Nash & Young. Nash became an American citizen on 14 August 1978 and holds dual citizenship with the United Kingdom and the United States.