See also:

• Arts: Music: Composition: Composers: By Region: Europe: French  (3)
• Arts: Music: Composition: Composers: Medieval  (9)
• Arts: Music: Composition: Composers: P: Perotin  (10)
• Arts: Music: Styles: C: Choral: Composers  (11)

• HyperMusic: Leonin and Perotin - Biographical material on the two composers and their relationship with each other. Includes sample music in MIDI audio format.
• Leonin - Wikipedia article including information about the Magnus Liber and polyphonic organum with internal references to related people and topics and bibliographic material.
• Léonin - Speculation about his person and his place in medieval music from the Grove Concise Dictionary of Music entry at WQXR radio.
• Leonin, (c. 1135 - c. 1201), France - Biographical data, bibliography, major works, influences on Western music, and links.
• Léonin [Leonius, Leo, Leoninus] - Biography, major works and influence, and links to information on medieval polyphony.
• Magister Leoninus (? 1163 - 1190) - Karadar dictionary entry with life, influence, and related composers.
• Magister Leoninus and his Magnus Liber Organi - Biographical timeline, suggested reading, key works, and recommended recordings from Humanities Web.