You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: 25 YEARS & COUNTING 
Clue: In 2009 she was on a world tour at age 69; when "Jeopardy!" premiered in September 1984, she had the USA's No. 1 hit
tina turner