This piece is a characteristic Neapolitan salon waltz by the composer Vincenzo Di Chiara. It is distinctive for its graceful melodic charm and lighthearted rhythmic lilt typical of Italian light music of the period.
The primary challenge is maintaining a consistent dance-like waltz rhythm while balancing the light melody against the accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
'A tossa 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 'A tossa lasts about 3 minutes.
'A tossa 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 'O marito by Vincenzo Di Chiara, 'E zzite cuntignose by Vincenzo Di Chiara, 'A ciucculata by Vincenzo Di Chiara — see the full similar-pieces list on this page.