Though they were long misunderstood as mere technical hurdles, Bach's six suites for unaccompanied cello are among those rare works of music that offer inexhaustible rewards for performer and listener alike. Yo-Yo Ma gave a pathbreaking account of the suites back in the '80s (Suites for Unaccompanied Cello ) but returns to them here impelled by a unique and interdisciplinary approach. For this project, Ma engaged the talents of artists in different...