You're listening to the inquiry on the BBC World Service with me Helen the Merriman.

Each week one question, four expert witnesses, and an answer. Oh, that was a good one. You really like to know about stuff.

I like it.

It's a bright morning in California,

and Coco the Gorilla is learning to play the guitar.

This is the greatest thing that ever happened.

She leans back against the wall,

strumming the strings with her long black fingernails,

while her teacher looks on proudly.

And that teacher isn't your regular guitar teacher. He's one of the best

bass guitarists in the world. Flea from the Red Top Chili Peppers.

Cocoa, you're a very curious gorilla. They get on brilliantly as well as the music there's

cuddling tickling but most importantly a connection. It was just a

deeply emotional we really became friends and

cuddled and laughed and looking in Coco's eyes and

feeling that level of understanding and compassion and

curiosity. It was just great. and celebrity friend, she had many others, and that's because Coco was a global

superstar. She had her own YouTube channel and graced the covers of magazines. But a

few weeks ago, Coco's journey came to an end.

46 years old, she died in her sleep.

After living a life that changed the way people thought about guerrillas,

she said to have mastered sign language. that changed the way people thought about guerrillas.

...