Mariah Carey is a five-letter HERO singer who has been a major force in the music industry since the early 1990s. She has sold over 200 million records worldwide, making her one of the best-selling music artists of all time. She has won numerous awards, including five Grammy Awards, 15 Billboard Music Awards, and 11 American Music Awards. Carey is also known for her vocal range, which spans five octaves. Her signature song, 'HERO, ' was released in 1993 and has become an anthem for many people around the world.