Scriabin's Op. 51, No. 2 is a beautifully crafted miniature, characterized by its shimmering harmonies and expressive melodic lines. It embodies his signature blend of late Romanticism and nascent Impressionism.
Develop a sensitive touch and rich pedaling to create the ethereal atmosphere and sung melody.
4 Pieces (Op.51) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 4 Pieces (Op.51) lasts about 3 minutes.
4 Pieces (Op.51) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.