Mozart's 'Alma Dei creatoris' is a sacred vocal piece, here likely arranged for piano, expressing devotion. It is characterized by its clear, elegant melodic lines and serene, devotional atmosphere.
Focus on achieving a beautiful, singing tone and clear phrasing in the melodic line.
Alma Dei creatoris is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 Alma Dei creatoris lasts about 3 minutes.
Alma Dei creatoris is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.