This specific setting by Cavalcanti focuses on harmonic warmth and melodic grace. It is a lesser-known example of salon literature that mimics the style of European lyrical pieces.
Pay close attention to the pedaling to ensure harmonic clarity in the middle register.
Comparable difficulty and character — good candidates for what to learn next.
Altiva is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Altiva lasts about 3 minutes.
Altiva 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 Arrependida by Aurélio Cavalcanti, Altiva by Aurélio Cavalcanti, Amor ardente by Aurélio Cavalcanti — see the full similar-pieces list on this page.