I'll see your MM,and raise you A Case of You.Don't want to get started on the disappointment I personally feel for Joni allowing her voice to self destruct by refusing to quit smoking.But the period thru Ladies,Blue,For the Roses,and Court and Spark has some of my favorite songs by any female artist.
I think Blue was mainly about her breakup with Nash,with some JT thrown in as well.But most of the speculation on ACOY has always centered on Leonard Cohen,who is likely the subject of Rainy Day House as well...