This is a song by Mozart, likely a vocal piece rather than a solo piano work, focusing on a hopeful theme. Its musical distinctiveness would stem from Mozart's characteristic melodic grace and harmonic elegance.
Focus on achieving a beautiful, singing tone and clear articulation.
An die Hoffnung is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
An die Hoffnung is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.