This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Around 1580 a circle of Florentine humanists and composers began meeting at the home of Count Giovanni Bardi to debate a single, almost antiquarian question: how had the Greeks performed their tragedies? The group, later remembered as the Florentine Camerata, decided that Greek drama had not been merely spoken but sung throughout, in a style closer to heightened speech than to the polyphonic vocal music that dominated their own century. Their answer was theoretical, but Jacopo Peri and the poet Ottavio Rinuccini, working with the patron Jacopo Corsi, turned it into something performable. Corsi's house became the meeting place where Peri set Rinuccini's pastoral text Dafne entirely to music, using a new declamatory style, the stile rappresentativo, in which a solo voice moved freely over a simple instrumental accompaniment rather than being woven into contrapuntal texture. Dafne, completed between 1594 and 1598 and given a private performance in Florence in 1598, is generally recognized as the first opera in the true sense precisely because it was sung throughout, where earlier dramatic entertainments had only included musical numbers within a spoken play. Peri's achievement was a proof of concept more than a finished art form. It took Claudio Monteverdi, working in Mantua a decade later, to show what the new style could actually carry. His Orfeo of 1607 owed its basic technique, monody supported by instruments, directly to the Florentine experiments, but its musical and dramatic ambition went far beyond them: a fuller orchestra, a wider emotional range, and a command of pacing that let the Orpheus myth unfold as sustained drama rather than a sequence of sung recitations. Where Dafne had proven that a story could be told entirely in song, Orfeo proved that the result could be genuinely gripping theatre, and it is Monteverdi's opera, more than Peri's, that later opera houses trace their lineage to. Within decades the form had split into the traditions that still define it: Italian opera seria and opera buffa, French tragedie lyrique, and German Singspiel, each inheriting the Camerata's founding premise that a drama could be carried by voice and orchestra alone, without a single spoken line.