La Source opus 44, by Alphonse Hasselmans (1845–1912) was composed in 1898 for Hélène Gayat who, before she became the dedicatee of this work, regularly performed the composer’s earlier pieces. The entire work is a clear illustration of the composer’s attitude, with its exclusive use of four-finger arpeggios in each hand and the decision to place the melodic line in the thumbs. The idiomatic writing of the piece contributes to the impression of fluidity that radiates from it and echoes its aquatic title. Introduction in French and English by Constance Luzzati. – New engraving.