This is a brief, sentimental lullaby by the Spanish composer Claudio Espejo. Its simplicity relies on a gentle, swaying melody over a supportive harmonic base.
Focus on maintaining a smooth, singing tone in the right hand against a soft, steady accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Canción de Cuna - Lullaby is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 3.
You should be comfortable at Henle level 2 — meaning you can already play level 1–2 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Canción de Cuna - Lullaby lasts about 3 minutes.
Canción de Cuna - Lullaby is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include At Bedtime, TH 70 by Pyotr Tchaikovsky, Au matin by Paul Wachs, Barcarolle by Samuil Maykapar — see the full similar-pieces list on this page.