Introductory address, by A.T. Merritt.--Dance tunes of the fifteenth century, by Otto Kinkeldey.--Problems of authenticity in eighteenth-century music, by H.C. Robbins Landon.--Instrumental music outside the pale of classicism and romanticism, by Eric Werner.--Problems of intonation in the performance of contemporary music, by Walter Piston.--Coda, by Curt Sachs.