Flos Ut Rosa Floruit

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Flos Ut Rosa Floruit is a two-voice polyphonic conductus by an unknown composer from the 13th Century Notre Dame’s ars antiqua stylistic period. This a cappella composition is sacred but non-liturgical as it was composed originally and without content from previous works. Its poetic Latin text speaks about Jesus Christ’s birth (i.e. the “Nativity”) to a virgin Mary. The composer used music to reinforce and relate meaning to the text. The dynamics of a conductus would be generally even and subdued, as was reflected in the recording. Had the dynamics been more obviously contrasting, the listener would have been reverent and mindful only of the genius of the music itself and not of the Almighty God. Textual points of interest in this song (e.g. cantemus, domino etc...) are highlighted dynamically as well. (please see below) The Flos Ut Rosa Floruit score’s ambitus is from D to D suggesting Dorian mode on D (i.e. western C major scale, II-II) with the exception of a few Bb’s used in the tenor to maintain perfect consonance with duplum’s “F”. With respect to the time period of composition, I would not presume a tonal centre or even harmony as it requires triads. Given the polyphonic discant style of a conductus, there are a variety of dyads, and therefore certain intervals, throughout the piece. The composer used perfect consonant intervals of P1, P8 and P5. There was also limited use of other consonances (P4, -3) and dissonances (x4) on weak or passing beats. This composition is non-imitative and evenly homorhythmic with all voices usually moving forward together to 6/8 time. According to Mensural notation, this “tempus imperfectum to prolatio maior” used triple notes to represent the “Holy Trinity”. Composers used this “hidden” rhythmic motive of triple notes in every song to represent the unseen God as the basis for creation and life. Flos Ut Rosa
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