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In
1515, two years after he ascended the papal throne, Leo X, a member
of the Medici family, decided to pay a formal visit to Florence between
November and December. It was on that occasion that the idea was put
forward of holding a competition to design a facade for San Lorenzo,
Brunelleschi's unfinished basilica that had been patronized by the
Medici ever since its foundation (in 1421) and was also the family's
chosen place of burial. The proposal was made at a time when Michelangelo
seems to have been particularly interested in the problems of architectural
composition. This may be why the artist put up such a keen fight to
be chosen as author of the final project. Along with Michelangelo,
Antonio and Giuliano da Sangallo, Jacopo Sansovino, Baccio d'Agnolo
and even Raphael took part in the competition.
It seems that at first Michelangelo was entrusted solely with the
supervision of the sculptural decoration, while Jacopo Sansovino had
Baccio d'Agnolo build a wooden model for the facade. Though much appreciated
at the time, this has now been lost. Over the course of the year 1516
the rivalry between the candidates for such a prestigious commission
grew extremely fierce, but in the fall Leo X gave responsibility for
the architectural design of the facade to Michelangelo as well. Having
shaken off his competitors at last, he came up with an ingenious solution
to the problem that had always beset the architects of the Renaissance:
how to apply the classical orders correctly to the irregular facades
of churches on a basilican plan. He made people forget all about the
external structure of the church by concealing it behind the secular
front of a splendid private palace.
Michelangelo's design of the facade went through three main phases,
which can be identified in three drawings in the collection of Casa
Buonarroti, nos. 45 A, 47 A and 43 A. In all likelihood it was the
clearly-defined image in the last of these drawings that was translated
into the large wooden model in Casa Buonarroti, which itself reflects
the passage from the design stage to that of execution, as specified
in the contract drawn up between Leo X and the artist on January 19,
1518. On March 10, 1520, Michelangelo himself registered the rescission
of the contract, though only with regard to the supply of marble,
and the material that had already been collected was used to pave
the church of Santa Maria del Fiore. But the building work proceeded,
though at a slow pace, and there are reliable records of it continuing
up until the April of 1521. This was the year Leo X died. After the
brief pontificate of Hadrian VI, Clement VII ascended the throne.
Another member of the Medici family, he declared his intention to
resume work on the facade on several occasions and it was only on
his death (1534) that all possibility of carrying out the ambitious
and troubled project vanished for good. |
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