Yes, there is an organ present in the Milan Cathedral. It is a four-manual Cavaille-Coll organ with a total of 5,000 pipes and 100 stops. The organ was originally built in 1895 by Aristide Cavaille-Coll himself, but has since been modified and restored over the years to accommodate modern tastes. It is one of the largest organs in Europe and its sound can be heard throughout the cathedral. The instrument also features mechanical action keys which allow for greater precision when playing complex pieces.