The World's Longest Echo. 

Sonic Wonderland author Trevor Cox talks about playing saxophone in the space with the world's longest echo. There's also a piece with Wren Brier taken from the One Cool Thing podcast. Wren is a game artist, game designer, and BAFTA-award-winning narrative designer who created Unpacking.
This episode was recorded, produced and sound designed by Tom Whalley
It was made by Tbone Productions.