An alternative version of the Op. 63 variations, maintaining the same thematic material but with slight variations in texture. It offers a meditative approach to hymn variation writing.
Precision in controlling the harmonic resonance in the lower register is essential.
Comparable difficulty and character — good candidates for what to learn next.
11 variationer over 'Nå skrider dagen under' (Op.63a) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 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.
A typical performance of 11 variationer over 'Nå skrider dagen under' (Op.63a) lasts about 8 minutes.
11 variationer over 'Nå skrider dagen under' (Op.63a) 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 11 variationer over 'Nå skrider dagen under' by Dan Ehlert Nielsen, Blumenstück Op.19 by Robert Schumann, Am spinett by Christian Sinding — see the full similar-pieces list on this page.