 As a selection from Giuseppe Verdi's "Nabucco" is played in several different sequences in the film, Argento tasked Emerson with including the piece in his soundtrack.Emerson 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.