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From the Battle of Sarzanello to Marian prayer

David Burn

In 1485 Isaac took up his first known permanent appointment, as a singer at the Baptistry of San Giovanni in Florence.[6] Alongside his sacred duties, he threw himself into other aspects of his new home-city’s musical life.

In the fifteenth century, as now, Carnival season, immediately before Lent, was an especially important moment in the annual calendar. Processions took place, songs were sung in the streets, and music-theatrical events organised. For the 1488 Florence Carnival season, Isaac composed a work on an unprecedented scale celebrating the recent military capture of the fortress of Sarzanello from the Genoese. The piece, A la battaglia, sets a long text in three strophes by Gentile Becchi, bishop of Arezzo and former teacher of Lorenzo de’Medici (» Hörbsp. ♫ A la battaglia).[7] A complete performance, with musical repeats for each strophe, would have lasted about a quarter of an hour. A remarkable series of letters written by an eye-witness tells us that, after a spectacular build-up and secret rehearsals, the work was met with bewilderment by the Florentine public.[8]

The failure may have had more to do with Becchi’s extravagant and slightly ridiculous text than the music. Separated from its original words, Isaac’s battle piece (Battaglia), with its attractive melodies, lively rhythms, and varied textures, was clearly thought worth preserving: sometime in the last decade of the fifteenth century or early in the sixteenth, it entered a German source, the Apel Codex (» D-LEu Ms. 1494), where it was shortened, and retexted with Latin, sacred words in honour of Mary, O praeclarissima atque gloriosa domina totius spirtitualis vitae.[9] A similar process can be seen in the manuscript » PL-Wu Ms. 2016 (c. 1500, Silesia), where the piece was given the text Ave sanctissima civitas divinitatis aeterno, and in the Fridolin Sicher Organ Tablature (CH-SGs Ms. Sang. 530, early sixteenth century, Constance/St. Gallen), where it has the title O dulcedo virginalis.[10]