Primosch wrote his Sonata-Fantasia for Lambert Orkis, who asked for a work for the combination of piano and synthesizer, but the first movement insisted upon being later reworked as piano only. Thus, this set of original theme and 14 variations. Primosch feels that this set is haunted by textures from the recent and distant past, textures specific to the acoustic keyboard. For advanced pianists.

Prelude fantastico, quasi improvisando
Tema semplice, ma espressivo e con poco rubato
Variation I sognando, flessibile
Variation II scampering; leggiero
Variation III con fuoco
Variation IV moderato, flowing
Variation V moderato; like a mechanical toy
Variation VI sempre delicato e legato
Variation VII andante; a bit tipsy
Variation VIII allegretto
Variation IX pompous, a little grotesque
Variation X molto vivace
Variation XI grand; in romantic style
Variation XII senza tempo; quasi cadenza
Variation XIII cryptic
Variation XIV presto
Postlude fantastico, quasi improvisando