![Gregorian and Old Roman Eighth-mode Tracts: A Case Study in the Transmission of Western Chant (Routledge Revivals) - Kindle edition by Hornby, Emma. Politics & Social Sciences Kindle eBooks @ Amazon.com. Gregorian and Old Roman Eighth-mode Tracts: A Case Study in the Transmission of Western Chant (Routledge Revivals) - Kindle edition by Hornby, Emma. Politics & Social Sciences Kindle eBooks @ Amazon.com.](https://images-na.ssl-images-amazon.com/images/I/41rdnnOqABL._SX348_BO1,204,203,200_.jpg)
Gregorian and Old Roman Eighth-mode Tracts: A Case Study in the Transmission of Western Chant (Routledge Revivals) - Kindle edition by Hornby, Emma. Politics & Social Sciences Kindle eBooks @ Amazon.com.
Choir of the Monks of the Abbey of Saint Pierre de Solesmes & Dom Joseph Gajard - Gregorian Chant Vol.One No.3 Introits, Graduals, Squence (Album of 1953) | Play on Anghami
![The frequency of occurrence of the various modes for the 2,333 chants... | Download Scientific Diagram The frequency of occurrence of the various modes for the 2,333 chants... | Download Scientific Diagram](https://www.researchgate.net/profile/David-Huron-2/publication/266214843/figure/fig1/AS:668970617171969@1536506432057/The-frequency-of-occurrence-of-the-various-modes-for-the-2-333-chants-in-the-Liber_Q320.jpg)