Maurice Ravel’s «Vocalise-ètude» (en forme de habanera) was commissioned by A.L. Hettich 1907. Hettich commissioned several contemporary composers to write studies for his singing class at the Paris Conservatory. Originally written for piano in 1895, Ravel rearranged his work as a study for low voice and piano for Mr. Hettich’s class, it was aptly titled «Vocalise-ètude», or vocal study. The vocalise was also adapted to the violin and piano and later to many other instruments under the title «Pièce en forme de Habanera».