

An early Baroque composer whose treatise on basso continuo became a rulebook for the musical conversation between melody and harmony.
Living in the seismic shift from Renaissance polyphony to the dramatic expressiveness of the Baroque, Agostino Agazzari was a practical man of music. Based primarily in Siena and Rome, he composed sacred works and madrigals, but his enduring impact came from a slim, practical volume published in 1607: 'Del sonare sopra il basso'. This treatise was one of the first and clearest guides for musicians on how to realize the new figured bass, the foundational harmonic practice of the era. It instructed players on how to improvise accompaniment, essentially codifying the grammar of the Baroque sound. While his compositions are less performed today, Agazzari's manual provided the essential playbook for generations of continuo players, making him a crucial theorist in the background of music's great transformation.
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His famous treatise is dedicated to Cardinal Francesco Maria Del Monte, a patron of the arts who also supported Caravaggio.
Agazzari spent most of his career in Siena, not in the more prominent musical centers like Venice or Florence.
He was a member of the Accademia degli Intronati, a Sienese literary academy.
“The basso continuo is the foundation of the modern music.”