Mariah Carey is used to commercial failures. In the last decade, 4 (FOUR) of her albums were FLOPS: Glitter, Chambracelet, The Remixes and Memoirs of an imperfect angel. The last one sold less than 1 million copies. Greatest Hits was also a failure..I think people is fed up with her R&B, Hip-Hop style and remixes.. As for the voice, Celine Dion always had the best powerful and angelical voice as shown in the song All by myself and many others.