Fauré’s “Vocalise-Étude (Pièce)” is a lovely and poignant piece of music, not merely a vocal exercise but a musical work of considerable beauty. A new transcription for alto flute and piano is available from NSM.
“The Piano in Spain” by Ana Benavides. This beautiful book covers the history of the piano in Spain from its introduction to the time of Joaquín Turina. It contains a wealth of information, color images, & music examples. Available in the US from NSM.