You're about to listen to a BBC podcast, but this is about something else you might enjoy.

My name's Katie Lecky and I'm an assistant commissioner for on demand music on BBC Sounds.

The BBC has an incredible musical heritage and culture and as a music lover, I love being part of that.

With music on sounds, we offer collections and mixes for everything, from workouts to

helping you nod off, boogie in your kitchen, or even just a moment of calm. And they're all

put together by people who know their stuff. So if you want some expertly curated music in your

life, check out BBC Sounds. Just before this BBC podcast gets underway, here's something you may not know.

My name's Linda Davies, and I commissioned podcasts for BBC Sounds.

As you'd expect, at the BBC we make podcasts of the very highest quality,

featuring the most knowledgeable experts and genuinely engaging voices.

What you may not know is that the BBC makes podcasts about all kinds of things, like pop stars, poltergeists, cricket, and

conspiracy theories. And that's just a few examples. If you'd like to discover something a little

bit unexpected, find your next podcast over at BBC Sounds.

This is a download from the BBC. To find out more, visit BBC.com.ukuk slash radio four.

Hello today on Open Book, the lowdown from the trading floor at the London Book Fair,

and the literary impact of an amazing historical event.

The police commander on duty here at Checkpoint Charlie has suddenly announced that they can go over,

even though they may not have the right documents and they're simply charging now through the small gate in the fence

where they're queuing up to get across to the western side of the Berlin Wall.

An unforgettable moment in my generation's lifetime, and the reverberations continue to this day,

as writers continue to explore these malevolent societies that pitied neighbour against neighbour

in a world where your best friend could be your worst enemy.

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