The prolific, gifted, and influential artist Joni Mitchell has amassed a group of devoted followers and aficionados who have followed her genre-exploring career from folk, pop, rhythm and blues, jazz, and the romantic standards she has explored in her later years. Devotees of Ms. Mitchell often speak of the revelatory awakenings they experienced when first hearing the music of Ms. Mitchell; Joni Mitchell seems to speak directly to the inner feelings of those who respond to her complex music and her lyrics. Aside from writing her own lyrics and music, Ms. Mitchell plays several instruments and is an accomplished painter.