I have listened with delight to the sonata in E minor, by Mendelssohn, as performed by my friend, Miss W —. This composition stands alone, and exhibits the science under a new form. Its effects can only be drawn out by a mind in unison with the author. The style of Herz bears no resemblance to that of the sombre Mendelssohn, and is strikingly original. It may be said to be an assemblage of the most glittering objects continually passing before the eyes. What can vie with his sonatas when executed by the brilliant touch of Miss R —? The genius of the piano-forte, after all, in my estimation, lies in an opposite direction. It is the least obtrusive of all the instruments, and never delights so much as when playing an under part.