## Keycodes symphony
### Instructions
Like an inspired Beethoven who's going to write his Moonlight Sonata, you're about to compose a colourful symphony of letters with your keyboard.
Write the function `compose` :
- Make it fire every time a key is pressed
- Create a new `div` with the class `note` when a letter of the lowercase alphabet is pressed, which has a unique background color generated using the `key` of the `event` , and displays the corresponding letter pressed
- If the pressed key is the `Backspace` one, delete the last note
- If the pressed key is the `Escape` one, clear all the notes
### Notions
- [Keyboard event ](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent ): [`keydown` ](https://developer.mozilla.org/en-US/docs/Web/API/Document/keydown_event ), [`key` ](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key )
### Provided files
- Check the HTML file [index.html ](/public/subjects/keycodes-symphony/index.html ), which includes:
- the JS script which will allow to run your code
- some CSS pre-styled classes: feel free to use those as they are, or modify them
### Expected result
You can see an example of the expected result [here ](https://youtu.be/5DdijwBnpAk )