I didn't become aware of Tina Turner, not fully aware, at least, until she'd already launched her successful solo career in the 80s. At that time, I knew she was an amazing entertainer and that she was a Motown artist before she went solo. My folks filled me in a little on her ex-husband, Ike Turner. Then What's Love Got to Do with It came out and I learned her story. Tina, 79, has been retired for 10 years. She lives in a rented residence in Switzerland that's named Chateau Algonquin. She's married to a German record-executive, Erwin Bach, who is 16 years her junior. They married in . . .