Nini participated in the "Premio Diaristico Pieve S. Stefano" (Pieve Santo Stefano, Arezzo, Italy, 1998). He played, composed, and prepared the musical reading festival "Il suono dei poeti" for the Literary Coffee "Intra Moenia" of Naples (1998–99). He composed and performed music for the concerts "Suoni e Parole da Giacomo Leopardi" at the Chiostro di S.Patrizia (Naples, 1999) at the theatre La Perla (Agnano, Naples, 1999) at the Sannino auditorium (Ponticelli, Naples, 1999) in the La Valle dell'Orso amphitheatre to close the celebrations of "Leopardi in Campania" (Torre del Graco, Naples, 2000). In the show "La sagra del 99" with Eleonora Puntillo, he played at Villa Campolieto (Ercolano, Italy, 1999), at the Certosa di Padula (Padula, Salerno 1999), and in "Sala della Loggia" at the Maschio Angioino Castle for the "Marzo Donna" festival (Naples, 2000).