In this week's podcast, we speak with Alastair Mackie, head of digital advertising development at the Financial Times, who tells us how the publisher is experimenting with audio by creating an interactive audio documentary to immerse audiences in stories about Berlin.

Since the Financial Times and Google announced the Hidden Cities project in 2015, the publisher has been aiming to help readers discover fresh perspectives on some of the world’s cultural and political capitals, including Brussels, Dublin, Rio De Janiero and London.

Now utilising the latest in Google technology, the news organisation is taking audiences on a journey through the sights and sounds of the German capital.

Using just their voice, audiences can immerse themselves in Berlin's vibrant clubs, tango scene, parks, lakes or even university hospital.

Mackie tells us about how the Financial Times tackled the documentary, and the challenges they faced in doing so.

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