Not sure how I feel about the article, but it did prompt me to immediately download Blue from iTunes. It's a lovely song, but I think the others are correct in saying that she has many more that are even better.

I particularly love the Hejira and Dreamland albums. Song for Sharon and Furry Sings the Blues are absolutely magical to me.

Joni Mitchell is one of those artists for whom picking a single "best" song is somewhat futile, simply because there are so many surpassingly excellent ones and also because her albums are works of art greater than the sum of their parts.

The musicianship of Mitchell and her supporting cast is nothing short of extraordinary!