Schubert's D. 626 is a tender and lyrical piece, often interpreted as a gentle waltz or an impromptu, evoking a nostalgic and wistful mood. Its distinctiveness lies in its Schubertian melodic beauty and expressive harmonic color.
Focus on creating a beautiful, singing tone and using rubato expressively to enhance the lyrical quality.
Blondel zu Marien (D.626) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 6.
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 Blondel zu Marien (D.626) lasts about 2 minutes.
Blondel zu Marien (D.626) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.