“Brahms - Waltz - Op. 39, No. 15” is a short Romantic waltz in A-flat major. The piece is marked piano dolce at the opening, giving it a gentle, singing character rather than a brilliant concert-waltz style. The music uses a simple right-hand melody over steady left-hand waltz accompaniment, with repeated sections, first and second endings, small crescendos, and a delicate final dolce phrase.

Measures 1–8 present the opening waltz idea. The right hand carries a tender melody with short slurs and small rising gestures, while the left hand supports with the traditional waltz pattern of bass note followed by chords. The piano dolce marking keeps the beginning soft, graceful, and intimate.

Measures 9–16 continue the first section through the second ending. The melody becomes slightly fuller, with repeated chordal tones and a poco crescendo that gives the phrase a gentle lift. The first and second endings shape the repeat and lead the music into the next statement.

Measures 17–24 return to the opening character. The familiar melody and left-hand waltz pattern come back at piano, keeping the piece balanced and songlike. The phrase again grows through small accents and crescendos without losing its soft Romantic character.

Measures 25–36 bring the waltz to its final close. The music continues the familiar waltz texture, then moves into a delicate dolce ending with triplet figures in the right hand. The final measures settle quietly, giving the short waltz a tender and restrained conclusion.

Interesting fact: Brahms’s Op. 39 waltzes were originally written for piano duet, then later arranged by Brahms for solo piano. No. 15 became the most famous waltz in the set because of its warm melody, compact form, and gentle Romantic character.