Widor's 'Bach's Memento' is a Romantic-era tribute that likely draws inspiration from Bach's profound musical spirit, imbuing it with lyrical sweep and dramatic flair. It seeks to evoke the essence of Bach through a post-Baroque lens, emphasizing expressive melodic lines and rich harmonic colors.
Demands sophisticated use of pedal to create a rich sonority and careful shaping of lyrical phrases.
Bach's Memento is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
Bach's Memento is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.