Listen to Variations on a Polish Theme in B Minor, Op. 10: Variation IX. Piu mosso - Allegro online. Variations on a Polish Theme in B Minor, Op. 10: Variation IX. Piu mosso - Allegro is an English language song and is sung by Martin Jones. Variations on a Polish Theme in B Minor, Op. 10: Variation IX. Piu mosso - Allegro, from the album Szymanowski: Complete Piano Music, was released in the year 2015. The duration of the song is 1:08. Download English songs online from JioSaavn.