Priere Du Soir Op 31 No 4

From 25 preludes for piano or organ Opus 31. Music attached below.

Olivier Latry playing Op 66 No 10 on Alkan's original 1853 Erard pédalier.
https://www.youtube.com/watch?v=UDl-v_sD2uM

Much more about Alkan;
http://www.jackgibbons.com/alkanmyths.htm

Charles-Valentin Alkan. 30 November 1813 – 29 March 1888) was a French Jewish composer and virtuoso pianist. At the height of his fame in the 1830s and 1840s he was, alongside his friends and colleagues Frédéric Chopin and Franz Liszt, among the leading pianists in Paris, a city in which he spent virtually his entire life.

Alkan was born Charles-Valentin Morhange at 1 Rue de Braque in Paris to Alkan Morhange (1780–1855) and Julie Morhange, née Abraham. Alkan Morhange was descended from a long-established Jewish Ashkenazic community in the region of Metz; the village of Morhange is located about 30 miles (48 km) from the city of Metz. There is much written about Alkan that can easily be searched but his music was overlooked and missunderstood for many years but now being rediscovered. https://en.wikipedia.org/wiki/Charles-Valentin_Alkan His organ music was first championed by Kevin Bowyer on two discs played on the organ of Blackburn Cathedral.

Music for organ or piano with pedals.
Benedictus, Op. 54 (1859)
****12 Études pour les Pieds seulement, Nos. 1–6 (c. 1869)
11 Grands Préludes et 1 Transcription du Messie de Handel, Op. 66 (1859)
Pro Organo (1850)
11 Pièces dans le Style Religieux, et 1 Transcription, de Messie de Handel, Op. 72 (c. 1867)
Petits Préludes Sur Les Huit Gammes Du Plainchant (1859)
25 Preludes for solo piano or organ. Op. 31 (1844)
13 Prières, Op.64

https://imslp.org/wiki/Category:Alkan,_Charles-Valentin