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.
Pauline Byrns Pauline Byrns (May 6, 1917 – September 18, 1990) was an American singer who recorded successfully in the swing era of the late 1930s and 1940s, notably with Artie Shaw and the vocal groups Six Hits and a Miss and The Starlighters. She was often credited as Pauline Byrne or Pauline Byrnes. Singer Mel Tormé said of her: "Oh, what a singer... I admired her so much".