Long recognized as the greatest white female rock singer of the 1960s, Janis Joplin's influential and ground-breaking role in rock history has also made her one of the most iconic figures in popular history today. Known for her electrifying live performances and supercharged emotional delivery, she was a great blues singer and one of the most powerful rock vocalists ever. Though she only released four studio albums in her lifetime, she left behind a wealth of material and a legacy that endures to this day.