The Prelude in G-Flat Major, Op. 23 No. 10 is a 1903 composition by Sergei Rachmaninoff. It is part of Rachmaninoff's Ten Preludes, Op. 23.
It is written in conventional ternary form. The main theme in the left hand is accompanied by syncopated chords in the right hand; it begins at measure 2 and ends at measure 6. A parallel period follows from measures 6âÂÂ11, ending on an imperfect cadence. In measures 11âÂÂ18, a sequential period that is based on the rhythm of the main theme follows. Soprano and bass track each other in this section:
<br /> Measures 11 and 12
The "B" section, from measures 18âÂÂ34, employs sequential fragments of the "A" section. Syncopated chords from the "A" section are elongated. Rising chromatic patterns are present in both the bass and treble. Consider measures 18âÂÂ20 and 23âÂÂ25:
<br /> Measures 18âÂÂ20
<br /> Measures 23âÂÂ25
<br /> Measures 35 and 36
<br /> Measures 49 and 50
<br /> Measures 15 and 16