As from 1971, Enzo avails himself of the teamwork of his wife, NANDI OSTALI. In these years, particular attention is given to the didactic element, with the edition of various music techniques and studies; in addition, critical editions, such as Pagliacci by Leoncavallo, are introduced.

In 1984, Nandi Ostali succeeds her husband as the leading figure of the firm. From the second half of the ’80s to the present day, and thanks also to the persevering and fruitful efforts – aimed at promotion and propagation – of Casa Musicale Sonzogno, there has been renewed interest in the Verism composers on behalf of the public, of artistic directors, of musicologists, as well as of the great interpreters. This atmosphere of rediscovery witnesses the comeback to the international stage of a great deal of operas that had not been part of the programme of the most important theatres for decades; these operas include La Rondine by Puccini and Fedora by Giordano.