There isn't a thread for the Queen of R&B (blasphemy to say the least) so here we are!     MARIAH CAREY             Mariah Carey (born March 27, 1969 or 1970) is an American singer-songwriter, actress, record producer, and philanthropist.    In a career spanning over two decades, Carey has sold more than 200 million records worldwide, making her one of the best-selling music artists of all time. In 1998, she was honored as the world's best-selling recording artist of the 1990