Trick or Treat? is a short, rhythmic, and whimsical character piece written for pedagogical purposes. It is characterized by its sharp, punchy accents and clever interplay of minor-key dissonance.
Focus on the rhythmic consistency of the accents to convey the playful, mischievous character.
Comparable difficulty and character — good candidates for what to learn next.
"Trick or Treat?", V.29 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 "Trick or Treat?", V.29 lasts about 1 minute.
"Trick or Treat?", V.29 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 Berceuse, V.28 by Or Vaitzman, Blumenwalzer by Léon Jessel, Bluin' the Blues by Henry Ragas — see the full similar-pieces list on this page.