This is a Neapolitan song arrangement typical of the late 19th-century salon repertoire. It is distinguished by its charming, sentimental melodic line characteristic of the Canzone Napoletana style.
Focus on achieving a singing tone in the upper register while maintaining a gentle, flowing accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
'E vviolette! 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 'E vviolette! lasts about 3 minutes.
'E vviolette! 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 'A ponta 'e Pusilleco by Giuseppe De Gregorio, 'A cura 'e mammà by Giuseppe De Gregorio, 'A spartenza by Giuseppe De Gregorio — see the full similar-pieces list on this page.