Flos Harmonicus it is a term found in the treatise of Jerome of Moravia, (Tractatus de musica, printed between 1272 - 1304) which means "flower harmonious". In his treatise Jerome discuss about a kind of trill:

 

"[...] When we play a song on an organ, if we want to embellish any note, for example a G in the bass, then we leave that note unchanged and strike not the note immediately below it, F, but the not above it, namely a. Then we will [vibrate] vigorously and a most beautiful harmony arises we call harmonic flower (flos harmonicus)".

 

The Sound of Medieval Song. McGEE, Timothy. Oxford, 1998. p. 62

 

 

The Renaissance and Baroque music presents many kind of ornamentation/improvisation practice. One can see these practice trought many historical sources such as treatises and written music examples. In the Medieval music very often these sources are not clear and accessible to the contemporary musician, who consequently may have some difficulty to improvise in the medieval style. Therefore, the creation of improvisation sessions based in a personnel methodical system to search and learn the theory and practice of the Medieval counterpoint, improvisation and ornametation can be a solution for this situation. Sources such as Micrologus (Guido D'Arezzo, 992 - 1050), Tractatus de musica (Jerome de Moravia, ? - 2171), Codex Faenza (1420), De contrapuncto (Johannes Tinctoris, 1435 - 1511) will be some of the reference to this project. 

The main goal of this project is the creation of a Medieval improvisation method based in many sources, mainly the Codex Faenza 117. The method is already the in final fase, searching for an Editor to do an official publication.

This research started already long time ago, from a personnel interest and necessity to deepen into the Medieval music. Last year a lecture about this project was successfully presented in the Med/Ren Music Conference (June, 2014 - Birmingham / England).

More informations about the creator of the project: http://ceciliapecanha.wix.com/ceciliapecanha