Pour les connaisseurs, Georges Onslow, né en 1784, est l'un des rares compositeurs pré-romantiques français à s'être consacré à la musique de chambre. Berlioz rendra hommage à Onslow: "Vous savez que depuis la mort de Beethoven, il tient le sceptre de la musique instrumentale" ainsi que Schumann: "On s'est habitué une fois pour toutes à la manière des trois grands maîtres allemands: Haydn, Mozart, Beethoven, et en toute justice, on a admis parmi eux, Onslow". Intercalé entre les deux sonates de Onslow nous retrouvons le nocturne de Duport.
The 25 Preludes in all major and minor keys, Opus 31, appeared in 1847, designed for piano or organ, or, no doubt, for the instrument that Alkan particularly favoured, the pédalier or pianoforte with pedal-board, for which Schumann and Gounod, among others, also wrote. The Preludes go through all 24 keys, returning to a final Prayer in the affirmative original key of C major. The first set of nine opens meditatively and proceeds in a sequence of keys that moves alternately up a fourth and down a third, to F minor in the second and to D-flat major in the third, Dans le genre ancien, the old style in question being nothing more ancient than Bach, heard through the ears of Mendelssohn. Jewish tradition is at the root of the Prière du soir (“Evening Prayer”), the rejoicing of Psalm 150 and the Cantor’s chant of the Sixth Prelude.
In 1837 Alkan published a series of twelve pieces, Trois études de bravoure or Improvisations, Op. 12, Trois andantes romantiques, Op. 13, Trois morceaux dans le genre pathétique, Op. 15 and Trois études de bravoure (Scherzi), Op.16. These twelve piano pieces were issued in four volumes under the general title Douze Caprices. The studies that form the first volume had the earlier title Improvisations dans le style brillant, aptly descriptive. The first of the three, with its leaping octaves and sudden modulations, opens the door to a new world, technically and musically. It is followed by a D flat major Allegretto, initially a gentle contrast, although it increases in intensity, before the wistful ending over a sustained pedal-point.
If you'd like to access the full scope of Alkan's quirky style in bite-sized proportions rather than piling into the Concerto for Solo Piano, Les Quartre Ages, and other large-scale concoctions, here's a disc for you. Esquisses (Sketches) contains 49 piano miniatures, each lasting from 43 seconds to a little more than four minutes. Alkan apparently composed these over a 15-year span. He eventually partitioned the collection into four volumes, arranged according to key sequence.