song composed by Sergio Ortega with lyrics by Pablo Neruda (Spanish) and Valerio Negrini (Italian), performed by Inti-Illimani featuring Riccardo Fogli (counterpoint)
original song composed by Roby Facchinetti, lyrics by Valerio Negrini
original song composed by Roby Facchinetti, lyrics by Valerio Negrini; performed by Adriano Pappalardo