late 10th century – 14 December 1052) was an Irish abbot and musician, .
A Benedictine, Scotus was the abbot of St. Martin, Cologne, Germany in the year 1042.
He pilgrimaged in his youth to Colonia to the Gaelic-Irish convent of St. Martin.
[2] It is believed that he first introduced the Gregorian evening service (nocturns) into Germany.
The library of St. Martin, Cologne conserves his work Tractatum de utilitate cantus vocalis et de modo cantandi atque psallendi.