French composer “Camille Saint-Saëns (1835-1921) was left bereft at the death of his mother in December 1888, and the cold winter winds in Paris persuaded him that perhaps a warmer climate might better suit him,” (Interlude.hk). “Accordingly, he left Paris for Algiers where he stayed until May 1889 – walking, reading, listening, but not composing. Finally, in late 1889, he went first to Cadiz, Spain, and then to Las Palmas to take a winter holiday in the Canary Islands. There, he took a hotel room not in his well-known name but under the same of Charles Sannois, businessman, locked himself in his room, and started to work.
… The resulting work, Africa, Op. 89, was the result of the time he spent in Algeria and Egypt, and, at the final climax, uses the melody Salam al-Bey, then the Tunisian national anthem … In addition to this version for piano and orchestra, Saint-Saëns also created a solo piano version which is extremely difficult as both the originally challenging piano part and the orchestra parts are resolved in the solo pianist’s part.”
Sticking to the orchestral version: after beginning in G minor, the piece shifts to Eb major during an animated cadenza section in or around the 1:58 mark.