Preludes Nos. 5-10 were composed between 1930 and 1951 and published the following year, in 1952, by Salabert as Six Preludes.

This Prelude No. 9 was written in 1943. It is marked without a key signature, "languid" (languido), and in 6/8 time.

Above the left-hand chords, which descend chromatically as if succumbing to sorrow, the melody is sung plaintively, repeating the same melodic figure. In the middle section, the melody is played in the high register, in octaves. Supported by the resonant bass in the low register, it culminates in a climax where uncontrollable emotions seem to burst forth as tears and a vocal outpouring.