Schubert's Andante in A Major, D. 604, often presented as part of a larger sonata or as a standalone piece, is a beautifully crafted movement showcasing his signature lyrical charm and harmonic inventiveness. It features a delicate main theme that is explored with graceful variations.
Pay close attention to the melodic contours and the subtle harmonic shifts.
Andante in A major (D.604) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 5.
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 Andante in A major (D.604) lasts about 4.5 minutes.
Andante in A major (D.604) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.