Grammy-winning musician Rosanne Cash has canceled the four remaining dates of her “Black Cadillac: In Concert” tour and pushed back the recording session for next album because of a "a rare but benign condition." According to the singer-songwriter's Web site, Cash will undergo brain surgery at New York Presbyterian Hospital for the unspecified condition."Rosanne is expected to make a full recovery" her Web site added, "and will return to the studio to complete the recording of her debut for Manhattan Records." Cash, the eldest daughter of the late country legend Johnny Cash, will resume her touring schedule next spring and will complete work on a new book due for publication in early 2009. (MOG wishes her a quick and speedy recovery!)