The article details some of the day-to-day workings of both 17th century theater and 19th century opera, which is interesting in its own right, but I found it particularly intriguing because of the many parallels between what playwrights and composers were expected to do then and what choreographers are often expected to do today: specifically, tailor roles to the particular talents (and limitations) of the performers they’re creating works for and with whom they likely have a close association.
I don’t think that there are many modern theater or opera analogues to today’s major repertory dance companies. (The RSC, maybe, or regional German opera houses?) An opera star may sing at the Met or La Scala, but isn’t a part of either of those institutions in the way that, say, Wendy Whalen or Marcelo Gomes are a part of their respective home companies. And we expect those companies to give us new works every season, year in and year out, that showcase their stars and develop their rising talents. The major opera houses just don’t work like that anymore, although they once did. (ABT is admittedly something of a hybrid model.) The Met has to schedule and cast its operas something like three to five years in advance from a relatively limited pool of international stars, which must make commissioning, rehearsing, and mounting a new work tricky in terms of creating a role for a particular talent. I don't know how much lead time Peter Martins needed for "The Architecture of Dance" festival, but it's hard to imagine an opera or theater company being able to undertake a similar project.
Anyway, here are some quotes from Wills’ article to whet your appetite:
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Even with a proven performer like Felice Varesi singing the role of Macbeth, Verdi was tailoring and adjusting the part as he composed................ When he sent her first music to his Lady Macbeth (Marianna Barbieri-Nini), he wrote, “If there should be some passage that lies badly [for her voice], let me know before I do the orchestration [for the passage that needs change].” He did the same with Varesi, writing him: “I’m convinced that the tessitura [range] suits you well, but there could be some notes or passages that are uncomfortable for you, so write to me before I orchestrate it.” He asked Barbieri about the state of her trill before writing trills into her role—after her assurances, he gave her many trills in her drinking song.
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In the eighteenth century…the singer, not the composer, was the starting-point. When Mozart was a youth no one would dream of composing an aria until he had first heard the artist who was to perform it; and this might be no more than a fortnight before the premiere. Thus, for instance, Leopold Mozart to his wife during the composition of Mitridate Rè di Ponte in Milan in 1770—”Wolfgang has composed only one aria for the primo uomo, since he has not yet arrived and Wolfgang doesn’t want to do the same work twice over.” More than sixty years later, when Bellini was writing I Puritani for the Théâtre des Italiens in Paris, the situation was no different. “The whole of the first act is now finished, except for the trio, because I want first to try it out (provarlo) on [the tenor] Rubini.” [i]Provare is the word used for trying on a suit. Bellini’s contemporary, Giovanni Pacini, one of the most prolific operatic practitioners of his day, wrote in his memoirs that he always tried to serve his singers as a good tailor serves his clients, “concealing the natural defects of the figure and emphasizing its good points.”



