Legendary singer/songwriter Joni Mitchell has added seven dates supporting folk-rock pioneer Bob Dylan to the six previously announced Sept. 23, according to her management firm, Feldman and Associates. The dates are: Nov. 2, Syracuse, N.Y., Onondaga County War Memorial Arena; Nov. 3, Rochester, N.Y., Rochester War Memorial; Nov. 5, College Park, Md., Cole Field House; Nov. 9, Nashville, Tenn., Nashville Arena; Nov. 12, Orlando, Fla., Orlando Arena; Nov. 13, Tampa, Fla., Sun Dome; Nov. 14, Sunrise, Fla., National Car Rental Center.