text:  Another concerto follows--ten folio pages! whew!!----Oh ye ebony and ivory devils! oh for an exorcist to put you to flight! Cramped fingers are crossing each other at a great rate; we really tremble for the glue and the pegs and the wires and the whole economy of the instrument at that critical juncture when the performers arrive at a piece of mysterious notation where a great many tadpole-looking figures are huddled together under a black rainbow