The five Preludes, Op. 15 were composed in the year 1897 while Scriabin was occupied in concert tours with his friend and publisher, Beliaef. This year brought no less than forty-seven short preludes written at various times and collected in five sets: Opp. 11, 13, 15, 16, and 17. These preludes, though clever and original in melody, show the great influence of Chopin on Scriabin.

A collective description and analysis of the first three Prussian sonatas of Bach

Most of Domenico Scarlatti's harmonic progressions are quite orthodox when considered abstractly or free of their positioning in the score. The harmonic movement is given interest by subtle alterations in time; for example, (1) simultaneous upper and lower voices of different lengths, when repeated several times, change their relationship with each other; (2) one voice may be simply delayed so that it lags behind the other voice, thus combining to produce irregular harmonic sound on many succeeding beats; (3) the combination of two or more chords appearing on one beat is similar to number (2) but does not necessarily occur more than once.