The Cathedral chimes were restored in 2013 after a silence of some 20 years.
Jonathan MacKechnie-Jarvis, the Honorary Chimekeeper, will explain how they work, illustrating their 500 year history with music and pictures.
The talk will take place at St Nicholas Church in Lower Westgate Street and will last about 40 minutes. The audience will then be invited to stroll up to the Cathedral to hear the chimes at 4.00pm.
This event is one of many making up Gloucester History Festival and Heritage Open Days.