I want to know the answer to the following question:
How many "voices" did Montini's posters claim the people of Milan would hear?
All the background I'm provided with is that "He used his authority to ensure that the liturgical reforms of Pius XII were carried out at the local level and employed innovative methods to reach the people of Milan: Huge posters announced that 1,000 voices would speak to them from 10 to 24 November 1957.". Is that enough to answer the question?
Answer: yes