The term beatbusking is a combination of beatboxing and busking. Put simply, beatbusking is street performing for money. The beatbusker positions themselves in a pedestrian area of a city, for example, on a street corner, in a metro station or public square, and using microphone and amplifier, performs beatboxing in exchange for voluntary donations from the listeners and passers-by.

For a complete guide on how to beatbusk, check this article out!