Graham Stack  has written and produced hit records for many artists including a singer who relinquished her American what?
Tina Turner Tina Turner (born Anna Mae Bullock; November 26, 1939), is an American-born Swiss recording singer, songwriter, dancer, actress, and author. Born and raised in the Southeastern United States, Turner relinquished her American citizenship after obtaining Swiss citizenship in 2013.
Ernie Maresca Ernest Peter "Ernie" Maresca (August 21, 1938 – July 8, 2015) was an American singer, songwriter and record company executive, best known for writing or co-writing some of Dion's biggest hits, including "Runaround Sue" and "The Wanderer".