Gastão Vieira’s composition is a straightforward, functional piece meant for social dancing or home performance. It relies on standard cadential structures and predictable melodic phrasings.
Practice seamless transitions between the phrases to ensure a smooth flow.
Comparable difficulty and character — good candidates for what to learn next.
Boas festas 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 Boas festas lasts about 3 minutes.
Boas festas 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 1914 by Gastão Vieira, 'Cause I'm in Love by Walter Donaldson, 'Cross the Great Divide by George W. Meyer — see the full similar-pieces list on this page.