(b ?1760; d ? after 1800). Italian soprano. She was one of the leading singers of opera seria during the 1780s and 90s. Around 1783 she married the tenor Angelo Fantozzi and thereafter usually identified herself as Maria Marchetti Fantozzi. She was praised throughout Italy for her acting as well as her singing, particularly in Naples, where she performed in at least nine different operas in 1785–6. Marchetti was a specialist in the portrayal of passionate, tragic heroines like Semiramide and Cleopatra; she was thus ideally suited to create the role of Vitellia in W. A. Mozart's La clemenza di Tito. Music written for her by Luigi Cherubini, Giacomo Tritto and Niccolò Zingarelli, as well as Mozart, shows her to have been an extraordinary virtuoso, with a large range and a capacity for difficult coloratura.
From The Grove Book of Opera Singers in Oxford Reference.