Janis Joplin

Janis Joplin was a famous rock star who once gave the Doctor a coat which he loved and treasured. He wore it regularly during his tenth incarnation. (TV: Gridlock, AUDIO: The Rising Night)

Part of the 1960s counterculture scene, she was a resident of the Haight in San Francisco and played at 1967's Human Be-In. (PROSE: Wonderland)

Behind the scenes
Although it's never quite directly mentioned in the DWU, Joplin was the lead singer of Big Brother and the Holding Company.