Clérambault & the Second Tonus: A Guide for true Musici Prattici

Have you ever wondered why certain French Baroque organ pieces feel so idiomatic, almost as if they were originally conceived for a bowed string instrument? Or why a composer like Durante, working well into the 18th century, would still anchor his grand Magnificats in the ancient church tones?

As true Musici Prattici, we often find ourselves at the fascinating crossroads of the modal and tonal worlds. Today, we’re peeling back the layers of Clérambault’s Jeu Doux to explore how an expert identifies the "tonus" within the complex textures of the High Baroque.

In our recent analysis of Louis-Nicolas Clérambault’s "Jeu Doux" (II Tonus), several technical nuances emerged that every practitioner should consider when approaching this repertoire.

A striking feature of the Basse de Cromorne style is its direct lineage from the Pièces de Viole. The arpeggiated figures and wide-leaping intervals in the bass line are quintessentially idiomatic for the viola. When we "report" these to the organ, the simple harmony in the soprano serves merely as a backdrop to this "viola-like" agility in the pedals or left hand.

While a modern ear might instinctively label this piece as "G Minor," we, as true Musici Prattici, must look deeper. The piece is a classic example of the Second Tonus transposed to G. We can identify this through:

• Descending Species: The melodic contour strictly follows the interval patterns of the second tone.

• The Solmization Factor: The choice between sharps and naturals (e.g., using a B-sharp as a 'Mi' to resolve the 'Fa') reveals a logic rooted in hexachords rather than modern minor scales.

• Cadenza Mediana: The structure mirrors psalmody, often featuring a median cadence that recalls the two-part division of a hymn or psalm.

The shift from modal to tonal was never a clean break. We see this clearly in Durante’s Magnificat in B-flat Major, which, despite its "modern" key, is definitively built upon the Sixth Tonus. Similarly, the works of Zelenka (such as his Dixit Dominus) continue to weave the cantus firmus of the Fifth Tonus into a "Galant" orchestral setting.

The interplay between the ancient modal system and the emerging tonal language is where the true Affekt of Baroque music lives. To see these scores in detail and follow the specific solmization demonstrations, I encourage you to watch the full video on YouTube.

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