He was a Spanish composer and musicologist. Born on December 19, 1880 in the Guipuzcoan town of Azcoitia,1 at the age of six he began to study music theory, at eight the piano and at eleven the organ,2 he also studied counterpoint in Valladolid.3 In 1896 he joined the Society of Jesus and was soon named organist of the Basilica of Loyola.3 In 1907 he organized the First National Congress of Sacred Music in Valladolid,3 that same year he founded Música Sacra Hispana, a magazine that he directed until 1922, he also created the Schola Cantorum and was director of the choir of the Pontifical University of Comillas.4 At the end of the civil war, he was part of the first General Commissariat of Music and, between 1940 and 1951, he directed the Madrid Conservatory.4 In 1941 he was named a knight of the Order of Alfonso X the Wise and in 1943 he entered the Academy of Fine Arts of San Fernando.52 Otaño y Eguino wrote Miserere for five voices, Great Hymn to Saint Ignatius of Loyola, Twelve songs to the Sacred Heart, Basque Suite, Religious music and ecclesiastical legislation, Popular mountain singing, Manual of Gregorian chant, War calls in the Spanish army and Popular mountain singing, among others.43