Gianni Marchetti was born in Rome on the 7th of September 1933, gradauted in music and debuted as composer and orchestra conductor in 1956, reaching a sucess with various songs that are evergreen till the present day. Among them Nico FIdenco's "Legata a un granello di sabbia" Bobby Solo's "Una lacrima sul viso" and "Se piangi, se ridi", Celentano's "Il tangaccio", Gens' "In fondo al viale" and many more. He was the founder of Italian RCA. H was responsible at the artisti department of Roman "Dischi Ricordi" and Campi editore's discographical section.
He recorded in Rome, Paris, New York e Los Angeles the soundtracks of over 60 film, numerous intrumental albums and various albums for The Yardbirds, Bobby Winton, Dalida, Sergio Bruni, Nada ("Ho scoperto che esisto anch'io" "Nada", featuring songs by Piero Ciampi and Marchetti, Paolo Conte and Renzo Zenobi) and many others.
He wrote the music for the Moscow Olympic Games of 1980 recording with the State Symphony Orchestra Of Russia. Together with Tito Schipa Jr. he transposed Gaetano Donizetti's "Il Don Pasquale" into a musical ("Er Dom Pasquale") taking it to the New York Shakespearian festival.
For television he collaborated with Mario Soldati, Andrea Barbato, Mario Landi and Sergio Zavoli. For the latter he composed the music of "Nascita di una dittatura", "La notte della Repubblica", "Viaggio intorno all'Uomo", "Viaggio nel Sud", "Diario di un Cronista". Winner of three Sanremo festivals as song writer, winner of Il Disco d'Oro award, twice Critica Discografica Italiana award and twice Premio Immagine winner for best television theme of the year. For around ten years he collaborated with poet and songwriter Piero Ciampi as composer and instumentalist. Their songs have been sung by artists the like of Patty Pravo, Dalida, Nada, Gino Paoli, Gianni Morandi and many others.
For cinema he scored films such as Top Crack (1966), Die Slowly, You'll Enjoy It More (1967), Kill Me Quick, I'm Cold (1967), Un killer per sua maestą (1968), One Step to Hell (1968), The Magnificent Tony Carrera (1968), Il diario segreto di una minorenne (1968) Congo Hell (aka The Seven Red Berets) in 1969 ad continued in the 70's and to a lesser degree in the 1980's.
In his last years he spent his artistic life between Italy and France, where he had initiated a series of conference-concertos aimed at promoting the works of Muzio Clementi, "the father of grandpiano". He also brought to life the "Roma per la musica d'arte" work-group, dedicated to spread the work of Clemenzi and other great musicians.