By the term Playing from Score is meant the reproduction of a work written for a number of parts (human voices, instruments, or both) in a more or less faithful arrangement on the piano or organ. Without some kind of arrangement such a performance will be possible but in few cases. An introduction to score-playing must, therefore, elucidate clearly those principles according to which we should proceed in cases where the strict repro duction must be departed from; it must also state how to group in eve1y case most suitably in piano form, that which lies too far apart or intermixes too closely. Playing from score is always a kind of improvisation of the piano score.