How to make the computer continue to work when closing the lid of the laptop?

Question

macOS

All the best)
Friends, please tell me the answer to the following question)
When you close the laptop lid, the system goes to sleep and all active applications are turned off. For example, the same iTunes. Stops playing music. How can you make sure that closing the lid does not affect the operation of the system in any way - so that everything that works, how it works, does not stop? There was no screen lock and that's all)

Answer 1

connect to external monitor

Answer 2

Using a Mac laptop in closed display mode...
If the option using external peripherals is not suitable, use third-party utilities: InsomniaX, NoSleep, etc.
UPD:
Another option:
In the "System Preferences" menu (Apple menu in the upper left corner of the screen), select the "Sharing" section and check the "Internet Sharing" item.
With these settings, when the power adapter is connected and the Wi-Fi connection is active, the system will not go to sleep.

Answer 3

Connect the charging cable :)