Many artists have covered the song including Tori Amos, k.d. lang and Prince. The latter's version, retitled "A Case of U" was recorded for his 2002 album, One Nite Alone...
Prince was a huge fan of Joni Mitchell - the title of his protégés the Time's third album, Ice Cream Castle
, references the opening line of her song "Both Sides Now
"Prince used to write me fan mail with all of the U's and hearts that way that he writes," Mitchell recalled in 2015. "And the office took it as mail from the lunatic fringe and just tossed it! (Laughs.)".
There have been two covers that have charted Frank Stallone (the brother of actor Sylvester Stallone) released his version as the follow up to his 1980 hit single "Far From Over," peaking at #67. In 2013 James Wolpert reached #72 on the Hot 100 with his acoustic interpretation after singing it on The Voice