The collection at South Kensington contains several foreign instruments which cannot fail to prove interesting to the musician. Recent investigations have more and more elicited the fact that the music of every nation exhibits some distinctive characteristics which may afford valuable hints to a composer or performer. A familiarity with the popular songs of different countries is advisable on account of the remarkable originality of the airs; these mostly spring from the heart. Hence the natural and true expression, the delightful health and vigour by which they are generally distinguished. Our more artificial compositions are, on the other hand, not infrequently deficient in these charms, because they often emanate from the lingers or the pen rather than from the heart. Howbeit, the predominance of expressive melody and effective rhythm over harmonious combinations, so usual in the popular compositions of various nations, would alone suffice to recommend them to the careful attention of our modern musicians. The same may be said with regard to the surprising variety in construction and in manner of expression prevailing in the popular songs and dance-tunes of different countries. Indeed, every nation’s musical effusions exhibit a character peculiarly their own, with which the musician would find it advantageous to familiarise himself. Now, it will easily be understood that an acquaintance with the musical instruments of a nation conveys a more correct idea than could otherwise be obtained of the characteristic features of the nation’s musical compositions. Furthermore, in many instances the construction of the instruments reveals to us the nature of the musical intervals, scales, modulations, and suchlike noteworthy facts. True, inquiries like these have hitherto not received from musicians the attention which they deserve. The adepts in most other arts are in this respect in advance. They are convinced that useful information may be gathered by investigating the productions even of uncivilised nations, and by thus tracing the gradual progress of an art from its primitive infancy to its highest degree of development. Again, from an examination of the musical instruments of foreign nations we may derive valuable hints for the improvement of our own; or even for the invention of new. Several principles of construction have thus been adopted by us from eastern nations. For instance, the _free reed_ used in the harmonium is an importation from China. The organ builder Kratzenstein, who lived in St. Petersburg during the reign of Catherine II., happened to see the Chinese instrument _cheng_, which is of this construction, and it suggested to him, about the end of the 18th century, to apply the _free reed_ to certain organ stops. At the present day instruments of the harmonium class have become such universal favourites in western Europe as almost to compete with the pianoforte.