The museum of Teatro alla Scala is next to the theatre and it exhibits a prestigious collection of musical instruments, composers’ letters, ceramic pieces and set designs. Inside the museum there’s Livia Simoni library that has an amount of 150.000 volumes about history, lyric poetry, theatrical critics and musical scores, most of these bequeath by theatrical critic and playwright Renato Simoni, when he died in 1954, by actor Ruggero Ruggeri and by writer Arnaldo Fraccaroli.
In the museum are also safeguarded musical scores handwritten by Gioacchino Rossini, Giuseppe Verdi, Giacomo Puccini and Gaetano Donizetti. Messa da Requiem by Verdi and Tancredi by Rossini are two of the most important musical scores kept in the museum. Other significant objects exhibited in the museum of Teatro alla Scala are: the virginal decorated by Francesco Guaracino, a collection of porcelains (Capodimonte, Doccia e Meissen), ancient vases and the traditional Italian marionettes and puppets.