Julián Santos Carrión's composition is a late-Romantic or early-modern character piece that emphasizes lyrical expansion. The writing relies on traditional harmonic progressions and a expressive melodic arc.
Ensure the bass line provides a steady harmonic foundation for the expressive melody.
Comparable difficulty and character — good candidates for what to learn next.
Andante en Sol Mayor is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Andante en Sol Mayor lasts about 4 minutes.
Andante en Sol Mayor 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 Boceto Español by Julián Santos Carrión, Solace by Scott Joplin, Au Crépuscule by Mel Bonis — see the full similar-pieces list on this page.