'Tina:' review: Music icon Tina Turner looks back on her career with grace

In 2009, Tina Turner gave her final public performance. After which she did something that only a few mega-famous musicians actually succeed at: She retired. With her second husband, former record company executive Erwin Bach, she took up a life far from both the country of her birth and the bustle of the music industry, in Zurich.

"Tina" is a new documentary directed by Western (Fairhaven College) alumnus TJ Martin.