Saint Tuotilo (Tutilo, Tutilo von Gallen, Tutilo of Gall, Tutilo of Saint Gall) (c. 850 – c. 915) was a medieval monk and composer.
LifeBorn in Alemannic Germany, he is said to have been a large and powerfully built man, and an excellent boxer. Always cheerful and in excellent spirits, he was a general favorite. He received his education at St. Gall's, from Iso and the Irishman Moengall, teachers in the monastic school. He was the friend of Notker of St. Gall, with whom he studied music under Moengal. Educated at the Abbey of St. Gall, he remained to become a monk there.
Tuotilo was a poet, hymnist, architect, painter, sculptor, metal worker, and composer. His artistic interests included book illumination and music.
Tuotilo was a good speaker, had a fine musical voice, was a capital carver in wood, and an accomplished illuminator. Like most of the earlier monks of St. Gall, he was a clever musician, equally skilful with the trumpet and the harp. Besides being teacher of music in the upper school to the sons of the nobility, he was a classical tutor and could preach both in Latin and Greek. His chief accomplishments, however, were music and painting, and on these his reputation mainly rests. He was much in request and by the permission of his abbot travelled to distant places. One of his celebrated sculptures was the image of the Blessed Virgin for the cathedral at Metz. In addition, he was a mathematician and astronomer, and constructed an astrolabe or orrery, which showed the courses of the planets.
Tuotilo played several instruments, including the harp. The history of the ecclesiastical drama begins with the trope sung as Introit of the Mass on Easter Sunday. It has come down to us in a St. Gallen manuscript dating from the time of Tuotilo. According to the works catalogue of Ekkehard IV, Casus sancti Galli, Tuotilo is the author of five tropes; further research ascribed five further tropes to him. Some of them are available in modern editions.