Amable François Joseph Deleplanque's 'Aufsitôt que la Lumière' is a charming, likely vocal or keyboard piece from the Classical era. It aims to capture a gentle, lyrical sentiment with a focus on melody.
Emphasize a smooth, singing melodic line and delicate phrasing.
Aufsitôt que la Lumière is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
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 Aufsitôt que la Lumière lasts about 3 minutes.
Aufsitôt que la Lumière is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.