At the time of his death, Garinei was working on a stage musical inspired by Frank Capra's 1961 film, "A Pocketful of Miracles," ANSA reported.
Among Garinei's many credits were the lyrics for "Arrivederci Roma."
Garinei and his late partner, Sandro Giovannini, wrote Italy's first musical, "Attanasio Cavallo Vanesio" in 1952.
Among their many hits were "Giove In Doppio Petto," "Buonanotte Bettina," "Rinaldo In Campo," "Rugantino," "Alleluja Brava Gente" (1970) and "Aggiungi Un Posto A Tavola."
Radio host Fiorello devoted his Tuesday show to Garinei.
"We dedicate this program to him and we'll try to entertain you as much as we can because that's the way he would have wanted it," he said. "I can assure you of that because I knew him personally."