How a spontaneous duet between two strangers at a London railway station sparked a viral video and a valued friendship, bringing joy to uncertain times.

Last spring, Denis Robinson was playing one of the pianos at St Pancras International, when he was approached by passing musical theatre actor Ceili O'Connor. A video of their performance of Somewhere Over The Rainbow has been shared across the world. But what happened next?

The fourth series of Multi Story has been postponed, while the team focus on making a new podcast sharing stories of good people, doing good deeds during the coronavirus pandemic. Find out more and listen here: https://www.bbc.co.uk/programmes/p087sdc4/episodes/downloads

Presented and produced by Becca Bryers.
With contributions from Jim Davis at BBC Radio London