Argento prominently featured a selection from Giuseppe Verdi's "Nabucco" throughout "Inferno", the Chorus of the Hebrew Slaves ("Va, pensiero, sull'ali dorate"), an operatic chestnut, from scene two of the opera's third act. In two instances, a recording of the Sinphonic ["sic"] Orchestra and Chorus of Rome was used. Argento also tasked Emerson with including the piece in his soundtrack. He re-orchestrated "Va, pensiero..." in five-four time to mimic a "fast and bumpy" taxi ride through Rome. When Argento reviewed Emerson's progress he did not initially recognize the remix, but was later pleased to discover it was used for Sara's taxi ride.