Musician, canon, and poet. A canon in Paris
at the Church of St. Benoit and later the Cathedral of Notre
Dame; author of a lengthy versification of part of the Old
Testament. According to the 13th-century music theorist Anonymous
IV, he was creator of the
Magnus liber organi,
originally a book of 2-voiced organal settings of certain Mass
and Office chants. Various revised, updated, and supplemented
fonns of this collection survive in 13th-century manuscripts.