Nin studied piano with Moritz Moszkowski and composition at the Schola Cantorum (where he taught from 1906 to 1908). He toured as a pianist and was known as a composer and arranger of popular Spanish folk music. Nin was a member of the Spanish Academy and the French Legion of Honor.
In her diaries and fiction, his psychoanalytically oriented writer daughter Anaïs Nin often attempts to explain her own personality and problems by recalling how her father treated her as a child. She was also close to him off and on as an adult. Her "unexpurgated" diary volume Incest: From a Journal of Love describes an adult incestuous relationship with him. He also appears in her fiction. She describes him as an egotistical Don Juan, and she imitated him at times by being a "Doña Juana".
^Latin American Classical Composers. A biographical dictionary. First edition. Edited by Miguel Ficher, Martha Furman Schleifer, and John M. Furman.
^Taylor, Deems. "Dictionary of Musicians". Music Lovers' Encyclopedia. 4th ed. 1950. Important works for Violin and Piano: Seguida Española (Vieja Castilla, Murciana, Catalana, Andaluza), En el Jardin de Lindaraja,