Joni Mitchell is my favorite female singer song writers and her Record Blue is in my 10 top albums for sure.
In her early career Joni used the venerable Martin D-28: The mother and standard of all dreadnaughts. During the 50’s Martin made the guitars with straight braces rather than the desirable scalloped braces of the pre war Martins. This change did result in less bass and over all resonance but made the guitar somehow more tight sounding which is great for Joni’s rhythmic playing using mostly alternative tunings. These old Rosewood dreadnaughts has the perfect balance between a dry wood and wet ringing sound.