May 1988: Singer Joni Mitchell pauses during an interview in Toronto. (AP)
Dec. 1995: Mitchell poses with the Century Award at the 1995 Billboard Music Awards in NY. Mitchell was honored for her years of accomplishments in the music business. (AP)
May 1996: Mitchell at a news conference in Stockholm, Sweden, the day before receiving the yearly Polar Music Prize. (AP)
May 1998: Joni Mitchell performs at Pauley Pavilion in Los Angeles. (AP)
April 2000: Joni Mitchell sings her song "Both Sides Now," during Turner Network Television's All-Star Tribute to Joni Mitchell. (AP)
Sept. 2007: Mitchell and Herbie Hancock in New York. (AP)
March 2008: Joni Mitchell and Herbie Hancock perform as part of Nissan Live Sets on Yahoo! Music in Los Angeles. (AP)
Oct. 2014: Mitchell arrives to the Hammer Museum's "Gala In The Garden" in Los Angeles. (AP)
Feb. 2015: Mitchell arrives at the 2015 Clive Davis Pre-Grammy Gala show at the Beverly Hilton Hotel on Feb. 7, 2015. (AP)
Feb. 2015: Mitchell attends the 2015 Clive Davis Pre-Grammy Gala show at the Beverly Hilton Hotel on Feb. 7, 2015. (AP)