[2] He undertook further study at the Conservatoire de Paris with Louis Diémer, graduating in 1914 with another Premier Prix, a Gold Medal, and a Pleyel grand piano.
He also played in chamber ensembles with artists such as Jacques Thibaud, Paul Kochanski and Gaspar Cassadó, and was known for his performances of the music of the Spanish masters Isaac Albéniz, Enrique Granados, Joaquín Turina and Manuel de Falla, as well as Frédéric Chopin, César Franck, Claude Debussy and Maurice Ravel.
The work was dedicated to the pianist Ricardo Viñes, but de Falla chose Cubiles as a tribute to his exceptional qualities as a virtuoso and a musician.
From 1920 Cubiles played with great success throughout Europe and Britain, giving solo recitals, and concerto performances under conductors such as Ernest Ansermet, Carl Schuricht and Paul Paray.
On 16 November 1927 in Madrid, Cubiles introduced the original piano solo version of Ernesto Halffter's ballet Sonatina (containing the well-known "Danza de la Pastora").
He was elected to the seat left vacant by the death of Enrique Fernández Arbós in the Royal Academy of Fine Arts of St Ferdinand.
[11] José Cubiles received the Grand Cross of the Civil Order of Alfonso X, the Wise and the French Legion of Honour.