This is a rare salon piece by V. Timon, typical of the late 19th-century repertoire. It features a straightforward melodic line supported by simple harmonic accompaniment.
The main challenge is maintaining a consistent rhythmic pulse while phrasing the melody clearly.
Comparable difficulty and character — good candidates for what to learn next.
Au Tsar ! is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 3.
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 Au Tsar ! lasts about 3 minutes.
Au Tsar ! 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 Bolero by César Antonovich Cui, Bolero by César Cui, Bluebells of Scotland by Jules Egghard — see the full similar-pieces list on this page.