A short, simple piano piece by A. Fontes Jr. that exhibits the folk-influenced style common in Brazilian salon music. Its structure is repetitive and melodic.
The technical difficulty lies in achieving rhythmic precision during the repeating rhythmic patterns.
Comparable difficulty and character — good candidates for what to learn next.
Cahe n'agua is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 2.
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 Cahe n'agua lasts about 2 minutes.
Cahe n'agua 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 Bach-bwv-anh-114 by Johann Sebastian Bach, Bach-anh-114 by Johann Sebastian Bach, Blumenwalzer by Léon Jessel — see the full similar-pieces list on this page.