And today, the hurdy gurdy is used in all sorts of music traditional folk music, dance, contemporary and world music in the U.K., in France, in Spain and in Italy.

As Leah, one of the founders of the group, says,

He's writing the biography of a Russian musician.

It is very different from the classical performance of baroque opera or even opera in general.

Nova Scotia, eastern Canada, which is a very, very musical island, and its origins come from Scotland with the music and all the traditions, the dancing, the language, which unfortunately is dying out in Cape Breton.

The rock 'n' rollers had a tradition of sharing, as long as nobody made any money.

So it's really very successful teaching children that they have a heritage that's about mathematics, that it's not just about singing and dancing.

And in classical music we can follow these changes very, very accurately because of the music's powerful silent partner, the way it's been passed on notation.

And also telling it like now.

And music. Oh, such music!

(Music)

And for Afghanistan, where the Taliban banned music for many years, it is reintroducing their traditional music.

Que es? es Dance? es urbana?

And so, with some ketchup, (musical notes) and then I can kind of (musical notes) (Laughter) (Applause)

Traditions.

Traditional?

I swear I hear music. Real music.

He actually just cannot do this.

Traditional

It's like tradition now, huh, Ricky?

Traditionally.

Music

Music

And then we made this.

Video I'm iO Tillett Wright, and I'm an artist born and raised in New York City.

For God's sake no, a thousand times no.

Office worker Green bean salad?BM No.

(Applause)

So let's have a look.

Now I put a bass line in.

DM Now I'll put some percussion in.

DM And now I'll attach the filter to the drums, so I can control the effect live.

DM And now I'll attach the filter to the bass for some more expression.

Let's watch. (Sound of air escaping from valve) (Music) (Whirring sound)

Basque (Music)

And this is a song that has a kind of a Celtic feel.

Keep up with Derek.

They are playing, all free, for all children.

And we plan to extend this to other parts of the city.

Why don't I just start by firing away with the video?

Woman 4 Google jellyfish.

So this is my niece, Charlotte.

And, that's about it, guys.

Necessity is the mother of evolution.

Here are some images from the film.