My name is Annie Matt Manus and my name is Nick Grimshaw. How long have we known each other babe?

Probably 20 years now and in that time we've always worked in and around music right?

We have. So it kind of makes sense that we do a podcast better.

It sounds like he's been 20 years in the making. It's not a avatar for podcasts, basically,

but it is good. So we put the world to rights with regards to music.

It's all the stuff that you'd want to chat to your mate about over a pint.

Sidetracked with us Annie and Nick,

listen on BBC Sounds.

So it's a short walk.

It's actually the only house which was not bombarded during the Second World War.

On a gray rainy day in Belgium, near the city of San Vitz on the German border.

I'm walking towards one of the world's most unusual libraries.

So are you ready? I am. Are you excited? I'm very excited. Bo.

The special code that's been pressed

which unlocks a security door and reveals a hidden underground room.

Wow.

And although this is a library, there are no books,

instead what lines the walls is a collection that's alive.

Wood-paneled wood-floor, but the thing that your eye is immediately drawn to are rows of fridges with glass doors

so you can look inside because inside those fridges are jars and each one has a

label with a number on. Yeah, this is the library, the collection. And do you hear the

microorganism? In this edition we're stepping inside the world's first and only

...