> For the complete documentation index, see [llms.txt](https://guide.tonaly.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.tonaly.app/instrument/string-instruments/display-key.md).

# Display key

You can display all tones of a scale or the current mode on the instrument. 

{% hint style="info" %}
In this way, you will know which tones sound great in your song. 
{% endhint %}

To do so, make sure the instrument is visible.

👉 Tap on the instrument title:

<div align="left"><img src="/files/-LzBbW_4n8O00qq_eKtl" alt=""></div>

👉 Tap this icon:

<div align="left"><img src="/files/-LzBarrkz9mpM6phurgW" alt=""></div>