Riefoli has also written songs for other Italian artists; the track "Si può dare di più", written for the trio Morandi-Ruggeri-Tozzi, won the first prize at the San Remo Festival. Riefoli co-wrote the song "Gente di mare" with Umberto Tozzi and Giancarlo Bigazzi, and his duet with Tozzi became Italy's entry in the Eurovision Song Contest 1987, placing third. The recording was a top ten hit in Switzerland, Austria and Sweden.