ExamplE joni mitchell style
Here’s a first finger challenge: open tunings can allow you to use just one finger for chords. Joni had polio as a child, which affected her fretting hand. Using one finger barre chords are evident in Big Yellow Taxi, Morning Morgantown, Little Green and others.
note the change of chord at the end of this bar; this is a move not too dissimilar from another exponent of open tunings, Keith richards.