In fact, director Cameron Crowe (who previously helmed semi-autobiographical rock movie Almost Famous) has apparently been working on a Joni Mitchell movie for several years now, with rumours circulating that Meryl Streep could be in line to play the star in her later years.

The Mamma Mia star learned the dulcimer during the pandemic, and paid homage to one of her heroes with a cover of California

The actor learned how to play the instrument during the pandemic, and her rendition is uncannily like the original.