Listening to the sounds from the different trumpets by the sculptor Alberto Garutti called the "City's Voices" at the Gae Square in Milan, Italy. Having some fun with the abstract effect of the trumpets and reflections. There are 23 pipes connected to different areas and floors of the building and where you can hear the different sounds from underground. An interesting interactive sculpting work called the "City's Voices" where everyone passing bye listens to the trumpet pipes..