I always go and listen to the cold open and the outro just to see what you chose.

Really?

I'm glad.

Pretty much nothing else.

You've heard the rest?

You've heard the rest?

That's hilarious.

I did not know that.

I do love sitting here and going like, I wonder which bit of this will be the cold open.

Yeah, I know.

No, I know.

Could it be... Here's a theme song.

Hello and welcome to let's learn everything, the show where we learn about anything and everything interesting.

This episode, we are going to learn about a science topic, a miscellaneous topic, and I'm going to be bringing neither of those things because my name is Caroline and I am this episode student.

I'm going to be listening, taking notes, summarizing at the end. That's my job today. My name's Ella. And today's science topic is blood. Actually, specifically it's understanding blood. Ooh. Oh. Okay. I'm so... okay, I'm really excited about this.

I have it. I have blood.

We have blood. Yes, you do.

My name's Tom, and today's miscellaneous topic is peculiar percussion instruments.

That's such a Tom. I was just going to say this.

It's been a while since I talked about music, and today I wanted to talk about some odd and underrated instruments with truly wild histories.

I have no doubt that I will enjoy this. Yeah, I'm really excited.

What's yours familiarity with blood? Very familiar, I hope, because you have about five litres of it, traveling around the 60,000 mile-long network of veins, arteries and capillaries in your body.

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