The recording also featured a tapping on the wall in the rooms once occupied by the Chesney family in the 19th Century.
The young voices were heard in the Annie’s Room section of the building by three investigators as well as Guest Experience Manager Katie Scott and medium Lee Dunn.
General Manager of The Real Mary King’s Close Paul Nixon said: “This investigation was a fascinating experience and one we’re delighted to have been able to share with such a wide audience.
“There are records showing an unusual number of unexplained events over the years in The Real Mary King’s Close and we’ve worked with a number of scientists and historians to research the people who once lived in the streets.”
The group of practised ghost hunter’s investigation lasted one hour and 45 minutes and focused on the exploration of real life stories of the historic figures who once occupied close.
Scottish Paranormal’s Ryan O’Neill said: “You can feel the history in this location, and you seriously feel like you have stepped back in time while being watched by the unseen.”
This investigation, which was the first to be live streamed, took place on Friday, November 13, 2020 and was watched by people across the world.
The full results of the investigation will be published on The Real Mary King’s Close website in the next few weeks.
The recording can be accessed HERE.