Aled Jones visits Cheddar Gorge in Somerset to hear the origins of the hymn Rock of Ages, inspired by a rock set into the striking local landscape. He also travels to Devon to explore the Beer Quarry caves, stone from which has been used in cathedral and church buildings across Britain. At Cheddar Baptist Church, Aled reflects on faith in God with lifelong member Barbara Merrick, who has been attending the church for 77 years. With new music specially recorded under current guidelines, we hear songs from worship leaders Martin Smith and Christian group Bright City, both of whom are from Brighton. Gemma Hunt meets them there and finds out how their Christian faith inspires their songwriting.