27. Janis Joplin (1943 – 1970)
Powerful mezzo-soprano vocal is what Janis Joplin is known for. She has a classical singing voice that lies between the voice type of the soprano and contralto. She was inducted into the Rock n Roll Hall of fame in 1995.
26. Kelly Clarkson (1982 – )
In 2002, Kelly Clarkson of Fort Worth, Texas, has won the first season of “American Idol”. She was able to convert it into a huge success. She has sold over 40 million singles and over 25 million albums worldwide and has earned three Grammys.