None of the records were successful, primarily because young Gianni's voice was changing.Two years later, he would re-emerge under his new stage name, Massimo Ranieri. A year later, he made another TV appearance singing, "Pietà per chi ti ama".Soon, in most every TV appearance he made, you could hear the girls screaming in the background.
In 2008, he starred in the film L'Ultimo Pulcinella.
In 2009, he played the storyteller in the play, Polvere di Baghdad, directed by Maurizio Scaparro.
When his singing career started to decline in 1975, Massimo concentrated on his acting career, both in the cinema and, most importantly, as a stage actor: he collaborated with the directors Mauro Bolognini, Giuseppe Patroni Griffi, Giorgio de Lullo, Giorgio Strehler and Maurizio Scaparro, performing a wide range of material from modern plays and musicals, to Molière and Shakespeare.
In 1988, he made a comeback with the song, "Perdere l'amore", which won the Sanremo Festival, that year.
In 1997, he made another comeback with "Ti parlerò d'amore".
That same year, he did the Italian voice-over for Quasimodo in Disney's "Hunchback of Notre Dame", where he also sang Quasimodo's part as well.
In 1974, came the singles "Te Voglio Bene Assaie", "Immagina", and "Per Una Donna".
During that year, he filmed Salvo D'Acquisto, where he portrayed a carabiniere who was executed by the Nazis during World War II.
In 2005, he returned on the stage with the show "Accussì Grande", after a long bout with illness, from which he fully recovered.