A work by the Colombian composer Emilio Murillo, this piece draws from traditional Andean and salon aesthetics. It is characterized by its simple yet evocative harmonic language and emotive, song-like phrasing.
The main challenge is maintaining a consistent cantabile tone in the melodic upper voice.
Comparable difficulty and character — good candidates for what to learn next.
Bajo la Reja 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 Bajo la Reja lasts about 3 minutes.
Bajo la Reja 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 Butterfly Lovers by Shuwen Zhang, "Світає" by Vitaly Melnichenko, Bahçe Duvarından Aştım by Anonymous — see the full similar-pieces list on this page.