Consider this piece as a duet. The right hand plays the melody, while the left hand consists of five ascending stepwise notes (though exceptions in number may occur).

Let's take measures 1-2 as an example:

Right hand: A♭ B A♭ G♭ F G♭

Left hand: D♭ E♭ F G♭ C

While the right-hand melody presents no issues, the left-hand melody notes are the uppermost notes of the chords. Concentrate your focus on the left-hand thumb (finger 1) to produce only the uppermost note, not the other chord tones. Be careful not to make all notes of the chord loud.

Rubato is essential. Feel free to fluctuate the tempo. There will be points where you need to change the 'color.' For instance, in measure 7, the melody note A♭ is reached, similar to measure 3, but the harmony is different. This iii chord can be quite shocking, so change the color here. When entering such measures with unexpected harmonies, pausing for approximately 0.3 seconds before playing can be even more effective.

The entire piece is marked 'singing with much expression,' so perform it as a singer would. For example, when moving from measure 18 to measure 19, the right-hand melody ascends by a sixth. While pianists can easily transition from F to D♭ without issue, singers would take time here. Therefore, emulate this by not rushing into the D♭.