This piece is a characteristic example of the Neapolitan popular song tradition adapted for the parlor piano. It is distinctive for its lighthearted, rhythmic lilt typical of turn-of-the-century salon music.
The primary challenge is maintaining a consistent, light dance rhythm while balancing the melody against a simple accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
'A nzalatara 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 'A nzalatara lasts about 3 minutes.
'A nzalatara 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.