"Songbirds, Greatest Female Singers of Our Time" is coming out in weeks. Joni is prominently featured as she makes the list of top 30 singers. I am the author, Brian Marshall. I will let all you Joni enthusiasts know when the book drops.
An excerpt:

Mitchell started singing with her friends at bonfires around Waskesiu Lake, northwest of Prince Albert, Saskatchewan. She widened her repertoire to include her favorite performers, such as Édith Piaf and Miles Davis, at age 18. Her first paid performance was on October 31, 1962, at a Saskatoon club that featured folk and jazz performers. Although...