the Great, his especial business being that of accompanying the king in his flute concertos. The seven years' war having put an end to these duties, he migrated to Hamburg, where he held honorable appointments as organist and conductor until his death. He wrote in a tasteful and free, but somewhat superficial, style; and while his compositions bear favorable comparison with those of other musicians of his time, they are by no means of a commanding nature like those of his father. There were, however, two reasons for this, wholly aside from the question of less ability in the younger composer. One of these is to be found in the free form which Emanuel Bach began to develop. Sebastian Bach had the advantage of writing his greatest works in a form which had been prepared for him, without having been exhausted. The technique of fugue had been created before his time, but its possibilities in the direction of freedom and spontaneity had never been illustrated. Bach proceeded to do this for the fugue form, and, it may be added, did it with such amplitude that no composer has been able to write a free and original fugue since. The son recognizing both that the fugue had been exhausted as a free art-form, and feeling no doubt that something more intuitively intelligible than fugue was possible, addressed himself to composition in the free style, in which the means of producing effects had not yet been mastered. The thematic use of material had been acquired, or was easily inferable from the fugue, but the proper manner of contrasting that material with other, calculated to relieve the attention and at the same time intensify the interest, remained for later explorers. The missing contrast was the lyric element, but it was not until the next generation of composers that it came into pianoforte music in satisfactory form. Accordingly the sonatas of Emanuel Bach sound dry and superficial, and while they are interesting as the remote models upon which Beethoven occasionally built, they do not repay study for the purposes of public performance. There is little heart in them. As a literary musician Bach deserves to be remembered for his work upon "The True Art of Playing the Piano." This was the first systematic instruction book for the instrument of which we have a record, and it still is the main dependence for information concerning the method of Bach's playing, and the way in which he intended the embellishments in his works to be performed. II.